diff --git a/polaris-assembly/polaris-assembly-api/src/main/java/com/tencent/polaris/assembly/api/AssemblyAPI.java b/polaris-assembly/polaris-assembly-api/src/main/java/com/tencent/polaris/assembly/api/AssemblyAPI.java
index df2aae2c2..ea5dc00eb 100644
--- a/polaris-assembly/polaris-assembly-api/src/main/java/com/tencent/polaris/assembly/api/AssemblyAPI.java
+++ b/polaris-assembly/polaris-assembly-api/src/main/java/com/tencent/polaris/assembly/api/AssemblyAPI.java
@@ -21,6 +21,7 @@
 import java.util.List;
 
 import com.tencent.polaris.api.pojo.Instance;
+import com.tencent.polaris.api.pojo.ServiceKey;
 import com.tencent.polaris.api.rpc.ServiceCallResult;
 import com.tencent.polaris.assembly.api.pojo.GetOneInstanceRequest;
 import com.tencent.polaris.assembly.api.pojo.GetReachableInstancesRequest;
@@ -28,6 +29,12 @@
 
 public interface AssemblyAPI extends AutoCloseable, Closeable {
 
+    /**
+     * 初始化服务实例列表，避免在服务调用的时候进行拉取，可有效减少调用时延。
+     * @param serviceKey 服务名和命名空间
+     */
+    void initService(ServiceKey serviceKey);
+
     /**
      * 获取路由后的服务实例列表，贯穿服务发现、服务路由的逻辑
      * @param request 多个符合路由条件的服务实例
diff --git a/polaris-assembly/polaris-assembly-api/src/main/java/com/tencent/polaris/assembly/api/pojo/Validator.java b/polaris-assembly/polaris-assembly-api/src/main/java/com/tencent/polaris/assembly/api/pojo/Validator.java
index d216149a8..49faa1254 100644
--- a/polaris-assembly/polaris-assembly-api/src/main/java/com/tencent/polaris/assembly/api/pojo/Validator.java
+++ b/polaris-assembly/polaris-assembly-api/src/main/java/com/tencent/polaris/assembly/api/pojo/Validator.java
@@ -20,6 +20,7 @@
 import com.tencent.polaris.api.exception.ErrorCode;
 import com.tencent.polaris.api.exception.PolarisException;
 import com.tencent.polaris.api.pojo.RetStatus;
+import com.tencent.polaris.api.pojo.ServiceKey;
 import com.tencent.polaris.api.rpc.ServiceCallResult;
 import com.tencent.polaris.api.utils.StringUtils;
 import com.tencent.polaris.client.util.CommonValidator;
@@ -36,6 +37,16 @@ public static void validateGetOneInstanceRequest(GetOneInstanceRequest request)
 		CommonValidator.validateNamespaceService(request.getNamespace(), request.getService());
 	}
 
+	/**
+	 * 校验服务名和命名空间
+	 *
+	 * @param serviceKey 请求对象
+	 * @throws PolarisException 校验失败会抛出异常
+	 */
+	public static void validateServiceKey(ServiceKey serviceKey) throws PolarisException {
+		CommonValidator.validateNamespaceService(serviceKey.getNamespace(), serviceKey.getService());
+	}
+
 	/**
 	 * 校验获取批量服务实例的请求
 	 *
diff --git a/polaris-assembly/polaris-assembly-client/src/main/java/com/tencent/polaris/assembly/client/DefaultAssemblyAPI.java b/polaris-assembly/polaris-assembly-client/src/main/java/com/tencent/polaris/assembly/client/DefaultAssemblyAPI.java
index ac74e830d..1c3a8ebf1 100644
--- a/polaris-assembly/polaris-assembly-client/src/main/java/com/tencent/polaris/assembly/client/DefaultAssemblyAPI.java
+++ b/polaris-assembly/polaris-assembly-client/src/main/java/com/tencent/polaris/assembly/client/DefaultAssemblyAPI.java
@@ -21,6 +21,7 @@
 
 import com.tencent.polaris.api.exception.PolarisException;
 import com.tencent.polaris.api.pojo.Instance;
+import com.tencent.polaris.api.pojo.ServiceKey;
 import com.tencent.polaris.api.rpc.ServiceCallResult;
 import com.tencent.polaris.api.utils.CollectionUtils;
 import com.tencent.polaris.assembly.api.AssemblyAPI;
@@ -45,6 +46,13 @@ protected void subInit() throws PolarisException {
         assemblyFlow = sdkContext.getOrInitFlow(AssemblyFlow.class);
     }
 
+    @Override
+    public void initService(ServiceKey serviceKey) {
+        checkAvailable("AssemblyAPI");
+        Validator.validateServiceKey(serviceKey);
+        assemblyFlow.initService(serviceKey);
+    }
+
     @Override
     public List<Instance> getReachableInstances(GetReachableInstancesRequest request) {
         checkAvailable("AssemblyAPI");
diff --git a/polaris-assembly/polaris-assembly-client/src/main/java/com/tencent/polaris/assembly/client/flow/DefaultAssemblyFlow.java b/polaris-assembly/polaris-assembly-client/src/main/java/com/tencent/polaris/assembly/client/flow/DefaultAssemblyFlow.java
index 395255bbd..6cbb6db47 100644
--- a/polaris-assembly/polaris-assembly-client/src/main/java/com/tencent/polaris/assembly/client/flow/DefaultAssemblyFlow.java
+++ b/polaris-assembly/polaris-assembly-client/src/main/java/com/tencent/polaris/assembly/client/flow/DefaultAssemblyFlow.java
@@ -32,6 +32,7 @@
 import com.tencent.polaris.api.pojo.ServiceInstances;
 import com.tencent.polaris.api.pojo.ServiceKey;
 import com.tencent.polaris.api.pojo.SourceService;
+import com.tencent.polaris.api.rpc.RequestBaseEntity;
 import com.tencent.polaris.api.rpc.ServiceCallResult;
 import com.tencent.polaris.api.utils.CollectionUtils;
 import com.tencent.polaris.api.utils.StringUtils;
@@ -65,6 +66,27 @@ public void setSDKContext(SDKContext sdkContext) {
         serviceCallResultListeners = ServiceCallResultListener.getServiceCallResultListeners(sdkContext);
     }
 
+    @Override
+    public void initService(ServiceKey serviceKey) {
+        CommonInstancesRequest commonInstancesRequest = buildCommonInstancesRequest(serviceKey, sdkContext.getConfig());
+        BaseFlow.syncGetResources(extensions, false, commonInstancesRequest, commonInstancesRequest);
+    }
+
+    private static CommonInstancesRequest buildCommonInstancesRequest(ServiceKey serviceKey, Configuration configuration) {
+        ServiceKey dstSvcKey = new ServiceKey(serviceKey.getNamespace(), serviceKey.getService());
+        ServiceEventKey dstInstanceEventKey = new ServiceEventKey(dstSvcKey, ServiceEventKey.EventType.INSTANCE);
+        ServiceEventKey dstRuleEventKey = new ServiceEventKey(dstSvcKey, ServiceEventKey.EventType.ROUTING);
+        ServiceInfo dstServiceInfo = new ServiceInfo();
+        dstServiceInfo.setNamespace(serviceKey.getNamespace());
+        dstServiceInfo.setService(serviceKey.getService());
+        RequestBaseEntity requestBaseEntity = new RequestBaseEntity();
+        requestBaseEntity.setService(serviceKey.getService());
+        requestBaseEntity.setNamespace(serviceKey.getNamespace());
+        RouteInfo routeInfo = new RouteInfo(null, dstServiceInfo, "", configuration.getProvider().getService());
+        return new CommonInstancesRequest(dstInstanceEventKey, dstRuleEventKey, null, routeInfo,
+                null, requestBaseEntity, configuration);
+    }
+
     @Override
     public List<Instance> getReachableInstances(GetReachableInstancesRequest request) {
         CommonInstancesRequest commonInstancesRequest = buildCommonInstancesRequest(request, sdkContext.getConfig());
diff --git a/polaris-assembly/polaris-assembly-factory/src/test/java/com/tencent/polaris/assembly/factory/AssemblyTest.java b/polaris-assembly/polaris-assembly-factory/src/test/java/com/tencent/polaris/assembly/factory/AssemblyTest.java
index a47bffa0f..1c3d2d4f1 100644
--- a/polaris-assembly/polaris-assembly-factory/src/test/java/com/tencent/polaris/assembly/factory/AssemblyTest.java
+++ b/polaris-assembly/polaris-assembly-factory/src/test/java/com/tencent/polaris/assembly/factory/AssemblyTest.java
@@ -168,6 +168,20 @@ public void testSyncGetReachableInstancesAbnormal() {
 		commonTestSyncGetReachableInstances(Operation.HAS_UNHEALTHY);
 	}
 
+	@Test
+	public void testInitService() {
+		ValidParam validParam = validParams.get(Operation.ALL_HEALTHY);
+		Configuration configuration = TestUtils.configWithEnvAddress();
+		try (AssemblyAPI assemblyAPI = AssemblyAPIFactory.createAssemblyAPIByConfig(configuration)) {
+			try {
+				Thread.sleep(3000);
+			} catch (InterruptedException e) {
+				LOG.error("test fail: testInitService", e);
+			}
+			assemblyAPI.initService(new ServiceKey(NAMESPACE_TEST, validParam.getServiceName()));
+		}
+	}
+
 	private void commonTestSyncGetOneInstance(Operation operation) {
 		ValidParam validParam = validParams.get(operation);
 		Configuration configuration = TestUtils.configWithEnvAddress();
diff --git a/polaris-common/polaris-config/src/main/java/com/tencent/polaris/factory/config/global/GlobalConfigImpl.java b/polaris-common/polaris-config/src/main/java/com/tencent/polaris/factory/config/global/GlobalConfigImpl.java
index d377c651c..8d4244f7e 100644
--- a/polaris-common/polaris-config/src/main/java/com/tencent/polaris/factory/config/global/GlobalConfigImpl.java
+++ b/polaris-common/polaris-config/src/main/java/com/tencent/polaris/factory/config/global/GlobalConfigImpl.java
@@ -117,7 +117,7 @@ public StatReporterConfigImpl getStatReporter() {
     }
 
     @Override
-    public TraceReporterConfig getTraceReporter() {
+    public TraceReporterConfigImpl getTraceReporter() {
         return traceReporter;
     }
 
diff --git a/polaris-common/polaris-config/src/main/java/com/tencent/polaris/factory/config/global/TraceReporterConfigImpl.java b/polaris-common/polaris-config/src/main/java/com/tencent/polaris/factory/config/global/TraceReporterConfigImpl.java
index ba4ad3b85..f2274057e 100644
--- a/polaris-common/polaris-config/src/main/java/com/tencent/polaris/factory/config/global/TraceReporterConfigImpl.java
+++ b/polaris-common/polaris-config/src/main/java/com/tencent/polaris/factory/config/global/TraceReporterConfigImpl.java
@@ -43,11 +43,11 @@ public String getReporter() {
 		return reporter;
 	}
 
-	void setEnable(Boolean enable) {
+	public void setEnable(Boolean enable) {
 		this.enable = enable;
 	}
 
-	void setReporter(String reporter) {
+	public void setReporter(String reporter) {
 		this.reporter = reporter;
 	}