diff --git a/common/model/api_request.go b/common/model/api_request.go
index 51ea0f26..29a1c2f2 100644
--- a/common/model/api_request.go
+++ b/common/model/api_request.go
@@ -1,11 +1,14 @@
 package model
 
-import "errors"
+import (
+	"AAStarCommunity/EthPaymaster_BackService/common/types"
+	"errors"
+)
 
 type TryPayUserOpRequest struct {
 	ForceStrategyId        string            `json:"force_strategy_id"`
-	ForceNetWork           string            `json:"force_network"`
-	ForceTokens            string            `json:"force_tokens"`
+	ForceNetwork           types.NetWork     `json:"force_network"`
+	ForceToken             string            `json:"force_token"`
 	ForceEntryPointAddress string            `json:"force_entrypoint_address"`
 	UserOperation          UserOperationItem `json:"user_operation"`
 	Extra                  interface{}       `json:"extra"`
@@ -13,7 +16,7 @@ type TryPayUserOpRequest struct {
 
 func (request *TryPayUserOpRequest) Validate() error {
 	if len(request.ForceStrategyId) == 0 {
-		if len(request.ForceNetWork) == 0 || len(request.ForceTokens) == 0 || len(request.ForceEntryPointAddress) == 0 {
+		if len(request.ForceNetwork) == 0 || len(request.ForceToken) == 0 || len(request.ForceEntryPointAddress) == 0 {
 			return errors.New("strategy configuration illegal")
 		}
 	}
diff --git a/common/model/api_response.go b/common/model/api_response.go
index 6272ba12..4a361925 100644
--- a/common/model/api_response.go
+++ b/common/model/api_response.go
@@ -1,18 +1,30 @@
 package model
 
+import (
+	"AAStarCommunity/EthPaymaster_BackService/common/types"
+	"math/big"
+)
+
 type TryPayUserOpResponse struct {
 	StrategyId         string              `json:"strategy_id"`
 	EntryPointAddress  string              `json:"entrypoint_address"`
 	PayMasterAddress   string              `json:"paymaster_address"`
 	PayMasterSignature string              `json:"paymaster_signature"`
-	PayReceipt         interface{}         `json:"pay_receipt"`
+	PayReceipt         *PayReceipt         `json:"pay_receipt"`
 	GasInfo            *ComputeGasResponse `json:"gas_info"`
 }
 
 type ComputeGasResponse struct {
-	StrategyId string `json:"strategy_id"`
-	TokenCost  string `json:"token_cost"`
-	Network    string `json:"network"`
-	Token      string `json:"token"`
-	UsdCost    string `json:"usd_cost"`
+	GasPriceInWei   uint64          `json:"gas_price_wei"` // wei
+	GasPriceInGwei  *big.Float      `json:"gas_price_gwei"`
+	GasPriceInEther string          `json:"gas_price_ether"`
+	TokenCost       string          `json:"token_cost"`
+	Network         types.NetWork   `json:"network"`
+	Token           types.TokenType `json:"token"`
+	UsdCost         string          `json:"usd_cost"`
+	BlobEnable      bool            `json:"blob_enable"`
+}
+type PayReceipt struct {
+	TransactionHash string `json:"transaction_hash"`
+	Sponsor         string `json:"sponsor"`
 }
diff --git a/common/model/strategy.go b/common/model/strategy.go
index e23e5988..a86516c0 100644
--- a/common/model/strategy.go
+++ b/common/model/strategy.go
@@ -1,7 +1,30 @@
 package model
 
+import "AAStarCommunity/EthPaymaster_BackService/common/types"
+
 type Strategy struct {
-	Id                string
-	EntryPointAddress string
-	PayMasterAddress  string
+	Id                 string                     `json:"id"`
+	EntryPointAddress  string                     `json:"entrypoint_address"`
+	PayMasterAddress   string                     `json:"paymaster_address"`
+	NetWork            types.NetWork              `json:"network"`
+	Token              types.TokenType            `json:"token"`
+	Description        string                     `json:"description"`
+	ExecuteRestriction StrategyExecuteRestriction `json:"execute_restriction"`
+	EnableEoa          bool                       `json:"enable_eoa"`
+	Enable7560         bool                       `json:"enable_7560"`
+	EnableErc20        bool                       `json:"enable_erc20"`
+	Enable4844         bool                       `json:"enable_4844"`
+	EnableCurrency     bool                       `json:"enable_currency"`
+}
+type StrategyExecuteRestriction struct {
+	BanSenderAddress   string `json:"ban_sender_address"`
+	EffectiveStartTime int64  `json:"effective_start_time"`
+	EffectiveEndTime   int64  `json:"effective_end_time"`
+	GlobalMaxUSD       int64  `json:"global_max_usd"`
+	GlobalMaxOpCount   int64  `json:"global_max_op_count"`
+	DayMaxUSD          int64  `json:"day_max_usd"`
+}
+
+type StrategyValidateConfig struct {
+	ValidateContractAddress string `json:"validate_contract_address"`
 }
diff --git a/common/model/user_operation.go b/common/model/user_operation.go
index d7e2c9c1..c1fb22b5 100644
--- a/common/model/user_operation.go
+++ b/common/model/user_operation.go
@@ -4,9 +4,10 @@ type UserOperationItem struct {
 	Sender               string `json:"sender" binding:"required"`
 	Nonce                string `json:"nonce" binding:"required"`
 	InitCode             string `json:"init_code"`
+	CallData             string `json:"call_data" binding:"required"`
 	CallGasLimit         string `json:"call_gas_limit" binding:"required"`
 	VerificationGasList  string `json:"verification_gas_list" binding:"required"`
-	PerVerificationGas   string `json:"per_verification_gas" binding:"required"`
+	PreVerificationGas   string `json:"per_verification_gas" binding:"required"`
 	MaxFeePerGas         string `json:"max_fee_per_gas" binding:"required"`
 	MaxPriorityFeePerGas string `json:"max_priority_fee_per_gas" binding:"required"`
 	Signature            string `json:"signature"`
diff --git a/common/types/chain.go b/common/types/chain.go
new file mode 100644
index 00000000..fa0e68d1
--- /dev/null
+++ b/common/types/chain.go
@@ -0,0 +1,22 @@
+package types
+
+type NetworkInfo struct {
+	Name   string `json:"main_net_name"`
+	RpcUrl string `json:"main_net_rpc_url"`
+}
+
+//type Chain string
+//
+//const (
+//	Ethereum Chain = "Ethereum"
+//	Arbitrum Chain = "Arbitrum"
+//	Optimism Chain = "Optimism"
+//)
+
+type NetWork string
+
+const (
+	Ethereum NetWork = "ethereum"
+	Sepolia  NetWork = "sepolia"
+	Arbitrum NetWork = "arbitrum"
+)
diff --git a/common/types/currency.go b/common/types/currency.go
new file mode 100644
index 00000000..efb4511b
--- /dev/null
+++ b/common/types/currency.go
@@ -0,0 +1,7 @@
+package types
+
+type Currency string
+
+const (
+	USD Currency = "USD"
+)
diff --git a/common/types/token.go b/common/types/token.go
new file mode 100644
index 00000000..f5321605
--- /dev/null
+++ b/common/types/token.go
@@ -0,0 +1,8 @@
+package types
+
+type TokenType string
+
+const (
+	USDT TokenType = "USDT"
+	ETH  TokenType = "ETH"
+)
diff --git a/common/utils/util.go b/common/utils/util.go
index d4b585bf..faef363c 100644
--- a/common/utils/util.go
+++ b/common/utils/util.go
@@ -1 +1,58 @@
 package utils
+
+import (
+	"AAStarCommunity/EthPaymaster_BackService/common/model"
+	"encoding/json"
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+func GenerateMockUserOperation() *model.UserOperationItem {
+	//TODO use config
+	return &model.UserOperationItem{
+		Sender:               "0x4A2FD3215420376DA4eD32853C19E4755deeC4D1",
+		Nonce:                "1",
+		InitCode:             "0x",
+		CallData:             "0xb61d27f6000000000000000000000000c206b552ab127608c3f666156c8e03a8471c72df000000000000000000000000000000000000000000000000002386f26fc1000000000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000000",
+		CallGasLimit:         "39837",
+		VerificationGasList:  "100000",
+		PreVerificationGas:   "44020",
+		MaxFeePerGas:         "1743509478",
+		MaxPriorityFeePerGas: "1500000000",
+		Signature:            "0x760868cd7d9539c6e31c2169c4cab6817beb8247516a90e4301e929011451658623455035b83d38e987ef2e57558695040a25219c39eaa0e31a0ead16a5c925c1c",
+	}
+}
+func GenerateUserOperation() *model.UserOperationItem {
+	return &model.UserOperationItem{}
+}
+
+func SignUserOp(privateKeyHex string, userOp *model.UserOperationItem) ([]byte, error) {
+
+	serializedUserOp, err := json.Marshal(userOp)
+	if err != nil {
+		return nil, err
+	}
+
+	signature, err := SignMessage(privateKeyHex, string(serializedUserOp))
+	if err != nil {
+		return nil, err
+	}
+
+	return signature, nil
+}
+func SignMessage(privateKeyHex string, message string) ([]byte, error) {
+	privateKey, err := crypto.HexToECDSA(privateKeyHex)
+	if err != nil {
+		return nil, err
+	}
+
+	// Hash the message
+	hash := crypto.Keccak256([]byte(message))
+
+	// Sign the hash
+	signature, err := crypto.Sign(hash, privateKey)
+	if err != nil {
+		return nil, err
+	}
+
+	return signature, nil
+}
diff --git a/common/utils/util_test.go b/common/utils/util_test.go
new file mode 100644
index 00000000..f9574b11
--- /dev/null
+++ b/common/utils/util_test.go
@@ -0,0 +1,33 @@
+package utils
+
+import (
+	"crypto/ecdsa"
+	"encoding/hex"
+	"fmt"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestGenerateKeypair(t *testing.T) {
+	privateKey, _ := crypto.GenerateKey()
+	privateKeyHex := crypto.FromECDSA(privateKey)
+	publicKey := privateKey.Public()
+	publicKeyECDSA, _ := publicKey.(*ecdsa.PublicKey)
+	publicKeyBytes := crypto.FromECDSAPub(publicKeyECDSA)
+	address := crypto.PubkeyToAddress(*publicKeyECDSA).Hex()
+	fmt.Printf("privateKeyHex: %x\n", privateKeyHex)
+	fmt.Printf("publicKey: %x\n", publicKeyBytes)
+	fmt.Printf("address: %s\n", address)
+}
+func TestSignUserOp(t *testing.T) {
+	//privateKeyHex: 1d8a58126e87e53edc7b24d58d1328230641de8c4242c135492bf5560e0ff421
+	//publicKey: 044eaed6b1f16e60354156fa334a094affc76d7b7061875a0b04290af9a14cc14ce2bce6ceba941856bd55c63f8199f408fff6495ce9d4c76899055972d23bdb3e
+	//address: 0x0E1375d18a4A2A867bEfe908E87322ad031386a6
+	signByte, err := SignUserOp("1d8a58126e87e53edc7b24d58d1328230641de8c4242c135492bf5560e0ff421", GenerateMockUserOperation())
+	assert.NoError(t, err)
+	fmt.Printf("signByte: %x\n", signByte)
+	singature := hex.EncodeToString(signByte)
+	fmt.Printf("singature: %s\n", singature)
+
+}
diff --git a/conf/env.go b/conf/env.go
index c6b677ac..5d8b7a7d 100644
--- a/conf/env.go
+++ b/conf/env.go
@@ -38,7 +38,7 @@ func getConfFilePath() *string {
 var Environment *Env
 
 func init() {
-	envName := ProdEnv
+	envName := DevEnv
 	if len(os.Getenv(envKey)) > 0 {
 		envName = os.Getenv(envKey)
 	}
diff --git a/docs/docs.go b/docs/docs.go
index a6959e2d..0e07f2c2 100644
--- a/docs/docs.go
+++ b/docs/docs.go
@@ -156,12 +156,12 @@ const docTemplate = `{
                     "type": "string"
                 },
                 "force_network": {
-                    "type": "string"
+                    "$ref": "#/definitions/types.NetWork"
                 },
                 "force_strategy_id": {
                     "type": "string"
                 },
-                "force_tokens": {
+                "force_token": {
                     "type": "string"
                 },
                 "user_operation": {
@@ -172,6 +172,7 @@ const docTemplate = `{
         "model.UserOperationItem": {
             "type": "object",
             "required": [
+                "call_data",
                 "call_gas_limit",
                 "max_fee_per_gas",
                 "max_priority_fee_per_gas",
@@ -181,6 +182,9 @@ const docTemplate = `{
                 "verification_gas_list"
             ],
             "properties": {
+                "call_data": {
+                    "type": "string"
+                },
                 "call_gas_limit": {
                     "type": "string"
                 },
@@ -209,6 +213,19 @@ const docTemplate = `{
                     "type": "string"
                 }
             }
+        },
+        "types.NetWork": {
+            "type": "string",
+            "enum": [
+                "ethereum",
+                "sepolia",
+                "arbitrum"
+            ],
+            "x-enum-varnames": [
+                "Ethereum",
+                "Sepolia",
+                "Arbitrum"
+            ]
         }
     },
     "securityDefinitions": {
diff --git a/docs/swagger.json b/docs/swagger.json
index f5b5ef35..e9a7fd87 100644
--- a/docs/swagger.json
+++ b/docs/swagger.json
@@ -145,12 +145,12 @@
                     "type": "string"
                 },
                 "force_network": {
-                    "type": "string"
+                    "$ref": "#/definitions/types.NetWork"
                 },
                 "force_strategy_id": {
                     "type": "string"
                 },
-                "force_tokens": {
+                "force_token": {
                     "type": "string"
                 },
                 "user_operation": {
@@ -161,6 +161,7 @@
         "model.UserOperationItem": {
             "type": "object",
             "required": [
+                "call_data",
                 "call_gas_limit",
                 "max_fee_per_gas",
                 "max_priority_fee_per_gas",
@@ -170,6 +171,9 @@
                 "verification_gas_list"
             ],
             "properties": {
+                "call_data": {
+                    "type": "string"
+                },
                 "call_gas_limit": {
                     "type": "string"
                 },
@@ -198,6 +202,19 @@
                     "type": "string"
                 }
             }
+        },
+        "types.NetWork": {
+            "type": "string",
+            "enum": [
+                "ethereum",
+                "sepolia",
+                "arbitrum"
+            ],
+            "x-enum-varnames": [
+                "Ethereum",
+                "Sepolia",
+                "Arbitrum"
+            ]
         }
     },
     "securityDefinitions": {
diff --git a/docs/swagger.yaml b/docs/swagger.yaml
index 8852545d..b20ce651 100644
--- a/docs/swagger.yaml
+++ b/docs/swagger.yaml
@@ -10,16 +10,18 @@ definitions:
       force_entrypoint_address:
         type: string
       force_network:
-        type: string
+        $ref: '#/definitions/types.NetWork'
       force_strategy_id:
         type: string
-      force_tokens:
+      force_token:
         type: string
       user_operation:
         $ref: '#/definitions/model.UserOperationItem'
     type: object
   model.UserOperationItem:
     properties:
+      call_data:
+        type: string
       call_gas_limit:
         type: string
       init_code:
@@ -39,6 +41,7 @@ definitions:
       verification_gas_list:
         type: string
     required:
+    - call_data
     - call_gas_limit
     - max_fee_per_gas
     - max_priority_fee_per_gas
@@ -47,6 +50,16 @@ definitions:
     - sender
     - verification_gas_list
     type: object
+  types.NetWork:
+    enum:
+    - ethereum
+    - sepolia
+    - arbitrum
+    type: string
+    x-enum-varnames:
+    - Ethereum
+    - Sepolia
+    - Arbitrum
 info:
   contact:
     name: AAStar Support
diff --git a/go.mod b/go.mod
index 1279dd3f..62750d97 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,7 @@ go 1.22.1
 
 require (
 	github.com/appleboy/gin-jwt/v2 v2.9.2
+	github.com/ethereum/go-ethereum v1.13.14
 	github.com/gin-contrib/cors v1.5.0
 	github.com/gin-gonic/gin v1.9.1
 	github.com/stretchr/testify v1.8.4
@@ -11,17 +12,29 @@ require (
 	github.com/swaggo/gin-swagger v1.6.0
 	github.com/swaggo/swag v1.16.3
 	golang.org/x/time v0.3.0
+	golang.org/x/xerrors v0.0.0-20231012003039-104605ab7028
 	k8s.io/apimachinery v0.29.2
 )
 
 require (
 	github.com/KyleBanks/depth v1.2.1 // indirect
+	github.com/Microsoft/go-winio v0.6.1 // indirect
+	github.com/StackExchange/wmi v1.2.1 // indirect
+	github.com/bits-and-blooms/bitset v1.10.0 // indirect
+	github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
 	github.com/bytedance/sonic v1.11.1 // indirect
 	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
 	github.com/chenzhuoyu/iasm v0.9.1 // indirect
+	github.com/consensys/bavard v0.1.13 // indirect
+	github.com/consensys/gnark-crypto v0.12.1 // indirect
+	github.com/crate-crypto/go-kzg-4844 v0.7.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/deckarep/golang-set/v2 v2.1.0 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
+	github.com/ethereum/c-kzg-4844 v0.4.0 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/go-openapi/jsonpointer v0.20.2 // indirect
 	github.com/go-openapi/jsonreference v0.20.4 // indirect
 	github.com/go-openapi/spec v0.20.14 // indirect
@@ -31,28 +44,38 @@ require (
 	github.com/go-playground/validator/v10 v10.18.0 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/golang-jwt/jwt/v4 v4.5.0 // indirect
+	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/holiman/uint256 v1.2.4 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mmcloughlin/addchain v0.4.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pelletier/go-toml/v2 v2.1.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible // indirect
+	github.com/supranational/blst v0.3.11 // indirect
+	github.com/tklauser/go-sysconf v0.3.12 // indirect
+	github.com/tklauser/numcpus v0.6.1 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.2.12 // indirect
 	golang.org/x/arch v0.7.0 // indirect
 	golang.org/x/crypto v0.20.0 // indirect
+	golang.org/x/exp v0.0.0-20231110203233-9a3e6036ecaa // indirect
+	golang.org/x/mod v0.15.0 // indirect
 	golang.org/x/net v0.21.0 // indirect
+	golang.org/x/sync v0.6.0 // indirect
 	golang.org/x/sys v0.17.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/tools v0.18.0 // indirect
-	golang.org/x/xerrors v0.0.0-20231012003039-104605ab7028 // indirect
 	google.golang.org/protobuf v1.32.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
+	rsc.io/tmplfunc v0.0.3 // indirect
 	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
 	sigs.k8s.io/yaml v1.3.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 106a0867..3050129d 100644
--- a/go.sum
+++ b/go.sum
@@ -1,13 +1,31 @@
+github.com/DataDog/zstd v1.4.5 h1:EndNeuB0l9syBZhut0wns3gV1hL8zX8LIu6ZiVHWLIQ=
+github.com/DataDog/zstd v1.4.5/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
 github.com/KyleBanks/depth v1.2.1 h1:5h8fQADFrWtarTdtDudMmGsC7GPbOAu6RVB3ffsVFHc=
 github.com/KyleBanks/depth v1.2.1/go.mod h1:jzSb9d0L43HxTQfT+oSA1EEp2q+ne2uh6XgeJcm8brE=
+github.com/Microsoft/go-winio v0.6.1 h1:9/kr64B9VUZrLm5YYwbGtUJnMgqWVOdUAXu6Migciow=
+github.com/Microsoft/go-winio v0.6.1/go.mod h1:LRdKpFKfdobln8UmuiYcKPot9D2v6svN5+sAH+4kjUM=
+github.com/StackExchange/wmi v1.2.1 h1:VIkavFPXSjcnS+O8yTq7NI32k0R5Aj+v39y29VYDOSA=
+github.com/StackExchange/wmi v1.2.1/go.mod h1:rcmrprowKIVzvc+NUiLncP2uuArMWLCbu9SBzvHz7e8=
+github.com/VictoriaMetrics/fastcache v1.12.1 h1:i0mICQuojGDL3KblA7wUNlY5lOK6a4bwt3uRKnkZU40=
+github.com/VictoriaMetrics/fastcache v1.12.1/go.mod h1:tX04vaqcNoQeGLD+ra5pU5sWkuxnzWhEzLwhP9w653o=
 github.com/appleboy/gin-jwt/v2 v2.9.2 h1:GeS3lm9mb9HMmj7+GNjYUtpp3V1DAQ1TkUFa5poiZ7Y=
 github.com/appleboy/gin-jwt/v2 v2.9.2/go.mod h1:mxGjKt9Lrx9Xusy1SrnmsCJMZG6UJwmdHN9bN27/QDw=
 github.com/appleboy/gofight/v2 v2.1.2 h1:VOy3jow4vIK8BRQJoC/I9muxyYlJ2yb9ht2hZoS3rf4=
 github.com/appleboy/gofight/v2 v2.1.2/go.mod h1:frW+U1QZEdDgixycTj4CygQ48yLTUhplt43+Wczp3rw=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
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@@ -90,22 +217,36 @@ github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO
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@@ -114,6 +255,8 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
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@@ -125,13 +268,19 @@ golang.org/x/net v0.21.0 h1:AQyQV4dYCvJ7vGmJyKki9+PBdyvhkSd8EIx/qb0AYv4=
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@@ -158,6 +307,8 @@ google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHh
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@@ -167,6 +318,8 @@ k8s.io/apimachinery v0.29.2 h1:EWGpfJ856oj11C52NRCHuU7rFDwxev48z+6DSlGNsV8=
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+rsc.io/tmplfunc v0.0.3 h1:53XFQh69AfOa8Tw0Jm7t+GV7KZhOi6jzsCzTtKbMvzU=
+rsc.io/tmplfunc v0.0.3/go.mod h1:AG3sTPzElb1Io3Yg4voV9AGZJuleGAwaVRxL9M49PhA=
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd h1:EDPBXCAspyGV4jQlpZSudPeMmr1bNJefnuqLsRAsHZo=
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0=
 sigs.k8s.io/yaml v1.3.0 h1:a2VclLzOGrwOHDiV8EfBGhvjHvP46CtW5j6POvhYGGo=
diff --git a/service/chain_service/chain_config.go b/service/chain_service/chain_config.go
new file mode 100644
index 00000000..3ce2b73d
--- /dev/null
+++ b/service/chain_service/chain_config.go
@@ -0,0 +1,39 @@
+package chain_service
+
+import (
+	"AAStarCommunity/EthPaymaster_BackService/common/types"
+	"github.com/ethereum/go-ethereum/ethclient"
+)
+
+var NetworkInfoMap map[types.NetWork]*types.NetworkInfo
+var NetWorkClientMap map[types.NetWork]*ethclient.Client
+
+func init() {
+	ConfigInit()
+	ClientInit()
+}
+func ConfigInit() {
+	//TODO api key secret store
+	NetworkInfoMap = map[types.NetWork]*types.NetworkInfo{
+		types.Ethereum: {
+			Name:   "ethereum",
+			RpcUrl: "https://eth-mainnet.g.alchemy.com/v2/bIZQS43-rJMgv2_SiHqfVvXa-Z1UGoGt",
+		},
+		types.Sepolia: {
+			Name:   "sepolia",
+			RpcUrl: "https://eth-sepolia.g.alchemy.com/v2/wKeLycGxgYRykgf0aGfcpEkUtqyLQg4v",
+		},
+	}
+}
+
+func ClientInit() {
+	NetWorkClientMap = make(map[types.NetWork]*ethclient.Client)
+	for chain, networkInfo := range NetworkInfoMap {
+		client, err := ethclient.Dial(networkInfo.RpcUrl)
+		if err != nil {
+			panic(err)
+		}
+		NetWorkClientMap[chain] = client
+		continue
+	}
+}
diff --git a/service/chain_service/chain_service.go b/service/chain_service/chain_service.go
new file mode 100644
index 00000000..0a43ca0e
--- /dev/null
+++ b/service/chain_service/chain_service.go
@@ -0,0 +1,52 @@
+package chain_service
+
+import (
+	"AAStarCommunity/EthPaymaster_BackService/common/types"
+	"context"
+	"github.com/ethereum/go-ethereum/common"
+	"golang.org/x/xerrors"
+	"math/big"
+)
+
+var GweiFactor = new(big.Float).SetInt(big.NewInt(1e9))
+var EthWeiFactor = new(big.Float).SetInt(new(big.Int).Exp(big.NewInt(10), big.NewInt(18), nil))
+
+func CheckContractAddressAccess(contract string, chain types.NetWork) (bool, error) {
+	if chain == "" {
+		return false, xerrors.Errorf("chain can not be empty")
+	}
+	contractAddress := common.HexToAddress(contract)
+
+	client, exist := NetWorkClientMap[chain]
+	if !exist {
+		return false, xerrors.Errorf("chain Client [%s] not exist", chain)
+	}
+	code, err := client.CodeAt(context.Background(), contractAddress, nil)
+	if err != nil {
+		return false, err
+	}
+	if len(code) == 0 {
+		return false, xerrors.Errorf("contract  [%s] address not exist in [%s] network", contract, chain)
+	}
+	return true, nil
+}
+
+// GetGasPrice return gas price in wei, gwei, ether
+func GetGasPrice(chain types.NetWork) (*big.Int, *big.Float, *string, error) {
+	client, exist := NetWorkClientMap[chain]
+	if !exist {
+		return nil, nil, nil, xerrors.Errorf("chain Client [%s] not exist", chain)
+	}
+	priceWei, err := client.SuggestGasPrice(context.Background())
+	if err != nil {
+		return nil, nil, nil, err
+	}
+
+	gasPriceInGwei := new(big.Float).SetInt(priceWei)
+	gasPriceInGwei.Quo(gasPriceInGwei, GweiFactor)
+
+	gasPriceInEther := new(big.Float).SetInt(priceWei)
+	gasPriceInEther.Quo(gasPriceInEther, EthWeiFactor)
+	gasPriceInEtherStr := gasPriceInEther.Text('f', 18)
+	return priceWei, gasPriceInGwei, &gasPriceInEtherStr, nil
+}
diff --git a/service/chain_service/chain_test.go b/service/chain_service/chain_test.go
new file mode 100644
index 00000000..6831ad39
--- /dev/null
+++ b/service/chain_service/chain_test.go
@@ -0,0 +1,30 @@
+package chain_service
+
+import (
+	"AAStarCommunity/EthPaymaster_BackService/common/types"
+	"context"
+	"fmt"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestCheckContractAddressAccess(t *testing.T) {
+	res, err := CheckContractAddressAccess("0x0576a174D229E3cFA37253523E645A78A0C91B57", types.Sepolia)
+	assert.NoError(t, err)
+	assert.True(t, res)
+}
+func TestGetGasPrice(t *testing.T) {
+	priceWei, gasPriceInGwei, gasPriceInEtherStr, _ := GetGasPrice(types.Ethereum)
+	priceWeiInt := priceWei.Uint64()
+	fmt.Printf("priceWeiInt %d\n", priceWeiInt)
+	fmt.Printf("gasPriceInGwei %f\n", gasPriceInGwei)
+	fmt.Printf("gasPriceInEtherStr %s\n", *gasPriceInEtherStr)
+
+}
+
+func TestGethClient(t *testing.T) {
+	client, _ := NetWorkClientMap[types.Sepolia]
+	num, _ := client.BlockNumber(context.Background())
+	assert.NotEqual(t, 0, num)
+	fmt.Println(num)
+}
diff --git a/service/contract_service/geth_recall.go b/service/contract_service/geth_recall.go
deleted file mode 100644
index f300daad..00000000
--- a/service/contract_service/geth_recall.go
+++ /dev/null
@@ -1 +0,0 @@
-package contract_service
diff --git a/service/dashboard_service/dashboard_service.go b/service/dashboard_service/dashboard_service.go
index a8acdeec..0aa0b4c0 100644
--- a/service/dashboard_service/dashboard_service.go
+++ b/service/dashboard_service/dashboard_service.go
@@ -1,16 +1,26 @@
 package dashboard_service
 
-import "AAStarCommunity/EthPaymaster_BackService/common/model"
+import (
+	"AAStarCommunity/EthPaymaster_BackService/common/model"
+	"AAStarCommunity/EthPaymaster_BackService/common/types"
+	"errors"
+)
 
 var mockStrategyMap = map[string]*model.Strategy{}
 
 func init() {
 	mockStrategyMap["1"] = &model.Strategy{
 		Id:                "1",
-		EntryPointAddress: "0x123",
-		PayMasterAddress:  "0x123",
+		EntryPointAddress: "0x0576a174D229E3cFA37253523E645A78A0C91B57",
+		PayMasterAddress:  "0x0000000000325602a77416A16136FDafd04b299f",
+		NetWork:           types.Sepolia,
+		Token:             types.USDT,
 	}
 }
 func GetStrategyById(strategyId string) *model.Strategy {
 	return mockStrategyMap[strategyId]
 }
+
+func GetSuitableStrategy(entrypoint string, chain types.NetWork, token string) (*model.Strategy, error) {
+	return nil, errors.New("not implemented")
+}
diff --git a/service/dashboard_service/strategy_selector.go b/service/dashboard_service/strategy_selector.go
deleted file mode 100644
index e540d521..00000000
--- a/service/dashboard_service/strategy_selector.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package dashboard_service
-
-import (
-	"AAStarCommunity/EthPaymaster_BackService/common/model"
-	"errors"
-)
-
-func GetSuitableStrategy(entrypoint string, network string, token string) (*model.Strategy, error) {
-	return nil, errors.New("not implemented")
-}
diff --git a/service/gas_service/gas_compotor.go b/service/gas_service/gas_compotor.go
deleted file mode 100644
index d80a4526..00000000
--- a/service/gas_service/gas_compotor.go
+++ /dev/null
@@ -1,11 +0,0 @@
-package gas_service
-
-import "AAStarCommunity/EthPaymaster_BackService/common/model"
-
-func ComputeGas(userOp *model.UserOperationItem, strategy *model.Strategy) (*model.ComputeGasResponse, error) {
-	return &model.ComputeGasResponse{}, nil
-}
-
-func ValidateGas(userOp *model.UserOperationItem, gasComputeResponse *model.ComputeGasResponse) error {
-	return nil
-}
diff --git a/service/gas_service/gas_computor.go b/service/gas_service/gas_computor.go
new file mode 100644
index 00000000..37c0b65c
--- /dev/null
+++ b/service/gas_service/gas_computor.go
@@ -0,0 +1,28 @@
+package gas_service
+
+import (
+	"AAStarCommunity/EthPaymaster_BackService/common/model"
+	"AAStarCommunity/EthPaymaster_BackService/common/types"
+	"AAStarCommunity/EthPaymaster_BackService/service/chain_service"
+)
+
+func ComputeGas(userOp *model.UserOperationItem, strategy *model.Strategy) (*model.ComputeGasResponse, error) {
+	priceInWei, gasPriceInGwei, gasPriceInEtherStr, getGasErr := chain_service.GetGasPrice(types.Sepolia)
+	if getGasErr != nil {
+		return nil, getGasErr
+	}
+	return &model.ComputeGasResponse{
+		GasPriceInWei:   priceInWei.Uint64(),
+		GasPriceInGwei:  gasPriceInGwei,
+		GasPriceInEther: *gasPriceInEtherStr,
+		TokenCost:       "0.0001",
+		Network:         strategy.NetWork,
+		Token:           strategy.Token,
+		UsdCost:         "0.4",
+		BlobEnable:      strategy.Enable4844,
+	}, nil
+}
+
+func ValidateGas(userOp *model.UserOperationItem, gasComputeResponse *model.ComputeGasResponse) error {
+	return nil
+}
diff --git a/service/gas_service/gas_computor_test.go b/service/gas_service/gas_computor_test.go
new file mode 100644
index 00000000..27fcf074
--- /dev/null
+++ b/service/gas_service/gas_computor_test.go
@@ -0,0 +1 @@
+package gas_service
diff --git a/service/operator/try_pay_user_op_execute.go b/service/operator/try_pay_user_op_execute.go
index d2edc05a..f7c01853 100644
--- a/service/operator/try_pay_user_op_execute.go
+++ b/service/operator/try_pay_user_op_execute.go
@@ -2,9 +2,13 @@ package operator
 
 import (
 	"AAStarCommunity/EthPaymaster_BackService/common/model"
+	"AAStarCommunity/EthPaymaster_BackService/common/utils"
+	"AAStarCommunity/EthPaymaster_BackService/service/chain_service"
 	"AAStarCommunity/EthPaymaster_BackService/service/dashboard_service"
 	"AAStarCommunity/EthPaymaster_BackService/service/gas_service"
+	"AAStarCommunity/EthPaymaster_BackService/service/pay_service"
 	"AAStarCommunity/EthPaymaster_BackService/service/validator_service"
+	"encoding/hex"
 	"golang.org/x/xerrors"
 )
 
@@ -35,6 +39,7 @@ func TryPayUserOpExecute(request *model.TryPayUserOpRequest) (*model.Result, err
 	if err := gas_service.ValidateGas(&userOp, gasResponse); err != nil {
 		return nil, err
 	}
+
 	//pay
 	payReceipt, payError := executePay(strategy, &userOp, gasResponse)
 	if payError != nil {
@@ -44,7 +49,7 @@ func TryPayUserOpExecute(request *model.TryPayUserOpRequest) (*model.Result, err
 	var result = model.TryPayUserOpResponse{
 		StrategyId:         strategy.Id,
 		EntryPointAddress:  strategy.EntryPointAddress,
-		PayMasterAddress:   strategy.EntryPointAddress,
+		PayMasterAddress:   strategy.PayMasterAddress,
 		PayReceipt:         payReceipt,
 		PayMasterSignature: paymasterSignature,
 		GasInfo:            gasResponse,
@@ -57,19 +62,44 @@ func TryPayUserOpExecute(request *model.TryPayUserOpRequest) (*model.Result, err
 		Cost:    "cost",
 	}, nil
 }
+
 func businessParamValidate(request *model.TryPayUserOpRequest) error {
+	if request.ForceStrategyId == "" && (request.ForceToken == "" || request.ForceNetwork == "") {
+		return xerrors.Errorf("Token And Network Must Set When ForceStrategyId Is Empty")
+	}
 	//UserOp Validate
+	if err := validator_service.ValidateUserOp(&request.UserOperation); err != nil {
+		return err
+	}
+	if request.ForceEntryPointAddress != "" && request.ForceNetwork != "" {
+		// check Address is available in NetWork
+		if ok, err := chain_service.CheckContractAddressAccess(request.ForceEntryPointAddress, request.ForceNetwork); err != nil {
+			return err
+		} else if !ok {
+			return xerrors.Errorf("ForceEntryPointAddress: [%s] not exist in [%s] network", request.ForceEntryPointAddress, request.ForceNetwork)
+		}
+	}
 	return nil
 }
 
-func executePay(strategy *model.Strategy, userOp *model.UserOperationItem, gasResponse *model.ComputeGasResponse) (interface{}, error) {
+func executePay(strategy *model.Strategy, userOp *model.UserOperationItem, gasResponse *model.ComputeGasResponse) (*model.PayReceipt, error) {
 	//1.Recharge
+	ethereumPayservice := pay_service.EthereumPayService{}
+	if err := ethereumPayservice.Pay(); err != nil {
+		return nil, err
+	}
 	//2.record account
+	ethereumPayservice.RecordAccount()
 	//3.return Receipt
-	return nil, nil
+	ethereumPayservice.GetReceipt()
+	return &model.PayReceipt{
+		TransactionHash: "0x110406d44ec1681fcdab1df2310181dee26ff43c37167b2c9c496b35cce69437",
+		Sponsor:         "aastar",
+	}, nil
 }
 func getPayMasterSignature(strategy *model.Strategy, userOp *model.UserOperationItem) string {
-	return ""
+	signatureBytes, _ := utils.SignUserOp("1d8a58126e87e53edc7b24d58d1328230641de8c4242c135492bf5560e0ff421", userOp)
+	return hex.EncodeToString(signatureBytes)
 }
 
 func strategyGenerate(request *model.TryPayUserOpRequest) (*model.Strategy, error) {
@@ -82,7 +112,7 @@ func strategyGenerate(request *model.TryPayUserOpRequest) (*model.Strategy, erro
 		}
 	}
 
-	suitableStrategy, err := dashboard_service.GetSuitableStrategy(request.ForceEntryPointAddress, request.ForceNetWork, request.ForceTokens) //TODO
+	suitableStrategy, err := dashboard_service.GetSuitableStrategy(request.ForceEntryPointAddress, request.ForceNetwork, request.ForceToken) //TODO
 	if err != nil {
 		return nil, err
 	}
diff --git a/service/operator/try_pay_user_op_execute_test.go b/service/operator/try_pay_user_op_execute_test.go
index 937bcf85..39a11329 100644
--- a/service/operator/try_pay_user_op_execute_test.go
+++ b/service/operator/try_pay_user_op_execute_test.go
@@ -2,30 +2,24 @@ package operator
 
 import (
 	"AAStarCommunity/EthPaymaster_BackService/common/model"
+	"AAStarCommunity/EthPaymaster_BackService/common/utils"
+	"encoding/json"
 	"fmt"
 	"github.com/stretchr/testify/assert"
-
 	"testing"
 )
 
 func TestTryPayUserOpExecute(t *testing.T) {
 	request := getMockTryPayUserOpRequest()
-	result, err := TryPayUserOpExecute(&request)
+	result, err := TryPayUserOpExecute(request)
 	assert.NoError(t, err)
-	fmt.Printf("Result: %v", result)
+	resultJson, _ := json.Marshal(result)
+	fmt.Printf("Result: %v", string(resultJson))
 }
 
-func getMockTryPayUserOpRequest() model.TryPayUserOpRequest {
-	return model.TryPayUserOpRequest{
+func getMockTryPayUserOpRequest() *model.TryPayUserOpRequest {
+	return &model.TryPayUserOpRequest{
 		ForceStrategyId: "1",
-		UserOperation: model.UserOperationItem{
-			Sender:               "0x123",
-			Nonce:                "",
-			CallGasLimit:         "",
-			VerificationGasList:  "",
-			PerVerificationGas:   "",
-			MaxFeePerGas:         "",
-			MaxPriorityFeePerGas: "",
-		},
+		UserOperation:   *utils.GenerateMockUserOperation(),
 	}
 }
diff --git a/service/pay_service/pay_service.go b/service/pay_service/pay_service.go
new file mode 100644
index 00000000..86ae6fc0
--- /dev/null
+++ b/service/pay_service/pay_service.go
@@ -0,0 +1,25 @@
+package pay_service
+
+type PayService interface {
+	Pay() error
+	RecordAccount()
+	getReceipt()
+}
+
+type EthereumPayService struct {
+}
+
+func (e *EthereumPayService) RecordAccount() {
+	//TODO implement me
+
+}
+
+func (e *EthereumPayService) GetReceipt() {
+	//TODO implement me
+
+}
+
+func (e *EthereumPayService) Pay() error {
+	//TODO implement me
+	return nil
+}
diff --git a/service/validator_service/basic_validator.go b/service/validator_service/basic_validator.go
index d893f658..d52effca 100644
--- a/service/validator_service/basic_validator.go
+++ b/service/validator_service/basic_validator.go
@@ -1,7 +1,29 @@
 package validator_service
 
-import "AAStarCommunity/EthPaymaster_BackService/common/model"
+import (
+	"AAStarCommunity/EthPaymaster_BackService/common/model"
+	"AAStarCommunity/EthPaymaster_BackService/service/chain_service"
+	"golang.org/x/xerrors"
+)
 
 func ValidateStrategy(strategy *model.Strategy, userOp *model.UserOperationItem) error {
+	if strategy == nil {
+		return xerrors.Errorf("empty strategy")
+	}
+	if strategy.NetWork == "" {
+		return xerrors.Errorf("empty strategy network")
+	}
+	// check Paymaster
+	ok, err := chain_service.CheckContractAddressAccess(strategy.PayMasterAddress, strategy.NetWork)
+	if !ok || err != nil {
+		return err
+	}
+	// check EntryPoint
+	return nil
+}
+
+func ValidateUserOp(userOp *model.UserOperationItem) error {
+	// check Sender is valid ,if sender is invalid And InitCode empty, return error
+	// nonce is valid
 	return nil
 }