diff --git a/README.md b/README.md
index 372b7b8..0f2b6b2 100644
--- a/README.md
+++ b/README.md
@@ -25,12 +25,16 @@
 
 ## 使用
 
-更新时间：2024.06.24
-
-下载及安装
+下载、安装、更新
 
 ```shell
-curl https://raw.githubusercontent.com/oneclickvirt/backtrace/main/backtrace_install.sh -sSf | sh
+curl https://raw.githubusercontent.com/oneclickvirt/backtrace/main/backtrace_install.sh -sSf | bash
+```
+
+或
+
+```
+curl https://cdn.spiritlhl.net/https://raw.githubusercontent.com/oneclickvirt/backtrace/main/backtrace_install.sh -sSf | bash
 ```
 
 使用
@@ -49,6 +53,9 @@ backtrace
 
 无环境依赖，理论上适配所有系统和主流架构，更多架构请查看 https://github.com/oneclickvirt/backtrace/releases/tag/output
 
+```
+
+```
 
 ## 卸载
 
diff --git a/backtrace_install.sh b/backtrace_install.sh
index 2964aa3..7d91e19 100644
--- a/backtrace_install.sh
+++ b/backtrace_install.sh
@@ -1,22 +1,46 @@
 #!/bin/bash
 #From https://github.com/oneclickvirt/backtrace
-#2024.06.28
+#2024.07.02
 
 rm -rf /usr/bin/backtrace
 os=$(uname -s)
 arch=$(uname -m)
 
+check_cdn() {
+  local o_url=$1
+  for cdn_url in "${cdn_urls[@]}"; do
+    if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" >/dev/null 2>&1; then
+      export cdn_success_url="$cdn_url"
+      return
+    fi
+    sleep 0.5
+  done
+  export cdn_success_url=""
+}
+
+check_cdn_file() {
+  check_cdn "https://raw.githubusercontent.com/spiritLHLS/ecs/main/back/test"
+  if [ -n "$cdn_success_url" ]; then
+    echo "CDN available, using CDN"
+  else
+    echo "No CDN available, no use CDN"
+  fi
+}
+
+cdn_urls=("https://cdn0.spiritlhl.top/" "http://cdn3.spiritlhl.net/" "http://cdn1.spiritlhl.net/" "http://cdn2.spiritlhl.net/")
+check_cdn_file
+
 case $os in
   Linux)
     case $arch in
       "x86_64" | "x86" | "amd64" | "x64")
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-linux-amd64
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-linux-amd64"
         ;;
       "i386" | "i686")
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-linux-386
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-linux-386"
         ;;
       "armv7l" | "armv8" | "armv8l" | "aarch64" | "arm64")
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-linux-arm64
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-linux-arm64"
         ;;
       *)
         echo "Unsupported architecture: $arch"
@@ -27,13 +51,13 @@ case $os in
   Darwin)
     case $arch in
       "x86_64" | "x86" | "amd64" | "x64")
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-darwin-amd64
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-darwin-amd64"
         ;;
       "i386" | "i686")
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-darwin-386
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-darwin-386"
         ;;
       "armv7l" | "armv8" | "armv8l" | "aarch64" | "arm64")
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-darwin-arm64
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-darwin-arm64"
         ;;
       *)
         echo "Unsupported architecture: $arch"
@@ -44,13 +68,13 @@ case $os in
   FreeBSD)
     case $arch in
       amd64)
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-freebsd-amd64
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-freebsd-amd64"
         ;;
       "i386" | "i686")
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-freebsd-386
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-freebsd-386"
         ;;
       "armv7l" | "armv8" | "armv8l" | "aarch64" | "arm64")
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-freebsd-arm64
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-freebsd-arm64"
         ;;
       *)
         echo "Unsupported architecture: $arch"
@@ -61,13 +85,13 @@ case $os in
   OpenBSD)
     case $arch in
       amd64)
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-openbsd-amd64
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-openbsd-amd64"
         ;;
       "i386" | "i686")
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-openbsd-386
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-openbsd-386"
         ;;
       "armv7l" | "armv8" | "armv8l" | "aarch64" | "arm64")
-        wget -O backtrace https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-openbsd-arm64
+        wget -O backtrace "${cdn_success_url}https://github.com/oneclickvirt/backtrace/releases/download/output/backtrace-openbsd-arm64"
         ;;
       *)
         echo "Unsupported architecture: $arch"
diff --git a/cmd/main.go b/cmd/main.go
index cc6c379..1ab649a 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -5,6 +5,7 @@ import (
 	"flag"
 	"fmt"
 	"net/http"
+	"os"
 
 	backtrace "github.com/oneclickvirt/backtrace/bk"
 	. "github.com/oneclickvirt/defaultset"
@@ -23,11 +24,18 @@ func main() {
 		http.Get("https://hits.seeyoufarm.com/api/count/incr/badge.svg?url=https%3A%2F%2Fgithub.com%2Foneclickvirt%2Fbacktrace&count_bg=%2323E01C&title_bg=%23555555&icon=sonarcloud.svg&icon_color=%23E7E7E7&title=hits&edge_flat=false")
 	}()
 	fmt.Println(Green("项目地址:"), Yellow("https://github.com/oneclickvirt/backtrace"))
-	var showVersion, showIpInfo bool
-	flag.BoolVar(&showVersion, "v", false, "show version")
-	flag.BoolVar(&showIpInfo, "s", true, "diabel show ip info")
-	flag.BoolVar(&backtrace.EnableLoger, "e", false, "Enable logging")
-	flag.Parse()
+	var showVersion, showIpInfo, help bool
+	backtraceFlag := flag.NewFlagSet("backtrace", flag.ContinueOnError)
+	backtraceFlag.BoolVar(&help, "h", false, "Show help information")
+	backtraceFlag.BoolVar(&showVersion, "v", false, "Show version")
+	backtraceFlag.BoolVar(&showIpInfo, "s", true, "Disabe show ip info")
+	backtraceFlag.BoolVar(&backtrace.EnableLoger, "e", false, "Enable logging")
+	backtraceFlag.Parse(os.Args[1:])
+	if help {
+		fmt.Printf("Usage: %s [options]\n", os.Args[0])
+		backtraceFlag.PrintDefaults()
+		return
+	}
 	if showVersion {
 		fmt.Println(backtrace.BackTraceVersion)
 		return