diff --git a/common/src/main/java/org/tron/common/prometheus/Metrics.java b/common/src/main/java/org/tron/common/prometheus/Metrics.java
index 3f37cf331aa..40a57305b1a 100644
--- a/common/src/main/java/org/tron/common/prometheus/Metrics.java
+++ b/common/src/main/java/org/tron/common/prometheus/Metrics.java
@@ -1,11 +1,13 @@
 package org.tron.common.prometheus;
 
+import com.google.common.annotations.VisibleForTesting;
 import io.prometheus.client.Collector;
 import io.prometheus.client.CollectorRegistry;
 import io.prometheus.client.Histogram;
 import io.prometheus.client.exporter.HTTPServer;
 import io.prometheus.client.hotspot.DefaultExports;
 import java.io.IOException;
+import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
 import org.tron.common.parameter.CommonParameter;
 
@@ -13,29 +15,26 @@
 public class Metrics {
 
   public static final double MILLISECONDS_PER_SECOND = Collector.MILLISECONDS_PER_SECOND;
+  @Setter
+  @VisibleForTesting
   private static volatile boolean initialized = false;
 
   private Metrics() {
     throw new IllegalStateException("Metrics");
   }
 
-  public static synchronized  void init() {
+  public static synchronized void init() throws IOException {
     if(initialized) {
       return;
     }
     if (CommonParameter.getInstance().isMetricsPrometheusEnable()) {
-      try {
-        DefaultExports.initialize();
-        new OperatingSystemExports().register(CollectorRegistry.defaultRegistry);
-        new GuavaCacheExports().register(CollectorRegistry.defaultRegistry);
-        int port = CommonParameter.getInstance().getMetricsPrometheusPort();
-        new HTTPServer.Builder().withPort(port).build();
-        logger.info("prometheus exposed on port : {}", port);
-        initialized = true;
-      } catch (IOException e) {
-        CommonParameter.getInstance().setMetricsPrometheusEnable(false);
-        logger.error("{}", e.getMessage());
-      }
+      DefaultExports.initialize();
+      new OperatingSystemExports().register(CollectorRegistry.defaultRegistry);
+      new GuavaCacheExports().register(CollectorRegistry.defaultRegistry);
+      int port = CommonParameter.getInstance().getMetricsPrometheusPort();
+      new HTTPServer.Builder().withPort(port).build();
+      logger.info("prometheus exposed on port : {}", port);
+      initialized = true;
     }
   }
 
diff --git a/framework/src/main/java/org/tron/common/metrics/MetricService.java b/framework/src/main/java/org/tron/common/metrics/MetricService.java
new file mode 100644
index 00000000000..6eccd89daca
--- /dev/null
+++ b/framework/src/main/java/org/tron/common/metrics/MetricService.java
@@ -0,0 +1,14 @@
+package org.tron.common.metrics;
+
+import org.tron.common.prometheus.Metrics;
+
+public class MetricService {
+
+  public static void startPrometheus() {
+    try {
+      Metrics.init();
+    } catch (Exception e) {
+      throw new IllegalStateException("start Prometheus service failed.", e);
+    }
+  }
+}
diff --git a/framework/src/main/java/org/tron/program/FullNode.java b/framework/src/main/java/org/tron/program/FullNode.java
index 699a0a8e61e..c5d6b339423 100644
--- a/framework/src/main/java/org/tron/program/FullNode.java
+++ b/framework/src/main/java/org/tron/program/FullNode.java
@@ -7,8 +7,8 @@
 import org.tron.common.application.ApplicationFactory;
 import org.tron.common.application.TronApplicationContext;
 import org.tron.common.log.LogResetter;
+import org.tron.common.metrics.MetricService;
 import org.tron.common.parameter.CommonParameter;
-import org.tron.common.prometheus.Metrics;
 import org.tron.core.Constant;
 import org.tron.core.config.DefaultConfig;
 import org.tron.core.config.args.Args;
@@ -40,7 +40,7 @@ public static void main(String[] args) {
     }
 
     // init metrics first
-    Metrics.init();
+    MetricService.startPrometheus();
 
     DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();
     beanFactory.setAllowCircularReferences(false);
diff --git a/framework/src/main/java/org/tron/program/SolidityNode.java b/framework/src/main/java/org/tron/program/SolidityNode.java
index fd5f7d56ef5..30becafab73 100644
--- a/framework/src/main/java/org/tron/program/SolidityNode.java
+++ b/framework/src/main/java/org/tron/program/SolidityNode.java
@@ -11,8 +11,8 @@
 import org.tron.common.application.ApplicationFactory;
 import org.tron.common.application.TronApplicationContext;
 import org.tron.common.client.DatabaseGrpcClient;
+import org.tron.common.metrics.MetricService;
 import org.tron.common.parameter.CommonParameter;
-import org.tron.common.prometheus.Metrics;
 import org.tron.core.ChainBaseManager;
 import org.tron.core.Constant;
 import org.tron.core.capsule.BlockCapsule;
@@ -75,7 +75,7 @@ public static void main(String[] args) {
       return;
     }
     // init metrics first
-    Metrics.init();
+    MetricService.startPrometheus();
 
     Application appT = ApplicationFactory.create(context);
     SolidityNode node = new SolidityNode(appT.getDbManager());
diff --git a/framework/src/test/java/org/tron/core/jsonrpc/JsonrpcServiceTest.java b/framework/src/test/java/org/tron/core/jsonrpc/JsonrpcServiceTest.java
index 98631210374..670c1911c2d 100644
--- a/framework/src/test/java/org/tron/core/jsonrpc/JsonrpcServiceTest.java
+++ b/framework/src/test/java/org/tron/core/jsonrpc/JsonrpcServiceTest.java
@@ -18,8 +18,8 @@
 import org.junit.Before;
 import org.junit.Test;
 import org.tron.common.BaseTest;
+import org.tron.common.metrics.MetricService;
 import org.tron.common.parameter.CommonParameter;
-import org.tron.common.prometheus.Metrics;
 import org.tron.common.utils.ByteArray;
 import org.tron.common.utils.Sha256Hash;
 import org.tron.core.Constant;
@@ -69,7 +69,7 @@ public class JsonrpcServiceTest extends BaseTest {
     CommonParameter.getInstance().setJsonRpcHttpPBFTNodeEnable(true);
     CommonParameter.getInstance().setJsonRpcHttpSolidityNodeEnable(true);
     CommonParameter.getInstance().setMetricsPrometheusEnable(true);
-    Metrics.init();
+    MetricService.startPrometheus();
 
     OWNER_ADDRESS =
         Wallet.getAddressPreFixString() + "abd4b9367799eaa3197fecb144eb71de1e049abc";
diff --git a/framework/src/test/java/org/tron/core/metrics/prometheus/PrometheusApiServiceTest.java b/framework/src/test/java/org/tron/core/metrics/prometheus/PrometheusApiServiceTest.java
index 1c6e56cbbbe..7a3fb296a5e 100644
--- a/framework/src/test/java/org/tron/core/metrics/prometheus/PrometheusApiServiceTest.java
+++ b/framework/src/test/java/org/tron/core/metrics/prometheus/PrometheusApiServiceTest.java
@@ -15,9 +15,12 @@
 import lombok.extern.slf4j.Slf4j;
 import org.junit.Assert;
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.ExpectedException;
 import org.tron.common.BaseTest;
 import org.tron.common.crypto.ECKey;
+import org.tron.common.metrics.MetricService;
 import org.tron.common.parameter.CommonParameter;
 import org.tron.common.prometheus.MetricLabels;
 import org.tron.common.prometheus.Metrics;
@@ -54,11 +57,14 @@ public class PrometheusApiServiceTest extends BaseTest {
   @Resource
   private ChainBaseManager chainManager;
 
+  @Rule
+  public ExpectedException thrown = ExpectedException.none();
+
   static {
     Args.setParam(new String[] {"-d", dbPath(), "-w"}, Constant.TEST_CONF);
     Args.getInstance().setNodeListenPort(10000 + port.incrementAndGet());
     initParameter(Args.getInstance());
-    Metrics.init();
+    MetricService.startPrometheus();
   }
 
   protected static void initParameter(CommonParameter parameter) {
@@ -134,6 +140,12 @@ public void testMetric() throws Exception {
       generateBlock(witnessAndAccount);
     }
     check();
+    // try to start prometheus again
+    MetricService.startPrometheus();
+    Metrics.setInitialized(false);
+    thrown.expect(IllegalStateException.class);
+    // try to start prometheus again
+    MetricService.startPrometheus();
   }
 
   private Map<ByteString, String> addTestWitnessAndAccount() {