diff --git a/spring-cloud-tencent-examples/polaris-router-grayrelease-example/router-grayrelease-backend/src/main/java/com/tencent/cloud/polaris/router/grayrelease/back/GrayReleaseBackendApplication.java b/spring-cloud-tencent-examples/polaris-router-grayrelease-example/router-grayrelease-backend/src/main/java/com/tencent/cloud/polaris/router/grayrelease/back/GrayReleaseBackendApplication.java
index dad89003d..a70a2ab39 100644
--- a/spring-cloud-tencent-examples/polaris-router-grayrelease-example/router-grayrelease-backend/src/main/java/com/tencent/cloud/polaris/router/grayrelease/back/GrayReleaseBackendApplication.java
+++ b/spring-cloud-tencent-examples/polaris-router-grayrelease-example/router-grayrelease-backend/src/main/java/com/tencent/cloud/polaris/router/grayrelease/back/GrayReleaseBackendApplication.java
@@ -19,19 +19,10 @@ package com.tencent.cloud.polaris.router.grayrelease.back;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.cloud.client.loadbalancer.LoadBalanced;
-import org.springframework.context.annotation.Bean;
-import org.springframework.web.client.RestTemplate;
 
 @SpringBootApplication
 public class GrayReleaseBackendApplication {
 
-	@Bean
-	@LoadBalanced
-	public RestTemplate restTemplate() {
-		return new RestTemplate();
-	}
-
 	public static void main(String[] args) {
 		SpringApplication.run(GrayReleaseBackendApplication.class, args);
 	}
diff --git a/spring-cloud-tencent-examples/polaris-router-grayrelease-example/router-grayrelease-gateway/src/main/java/com/tencent/cloud/polaris/router/grayrelease/gateway/RouterService.java b/spring-cloud-tencent-examples/polaris-router-grayrelease-example/router-grayrelease-gateway/src/main/java/com/tencent/cloud/polaris/router/grayrelease/gateway/RouterService.java
index be412e587..95f066f8a 100644
--- a/spring-cloud-tencent-examples/polaris-router-grayrelease-example/router-grayrelease-gateway/src/main/java/com/tencent/cloud/polaris/router/grayrelease/gateway/RouterService.java
+++ b/spring-cloud-tencent-examples/polaris-router-grayrelease-example/router-grayrelease-gateway/src/main/java/com/tencent/cloud/polaris/router/grayrelease/gateway/RouterService.java
@@ -20,9 +20,6 @@ package com.tencent.cloud.polaris.router.grayrelease.gateway;
 
 import org.springframework.cloud.openfeign.FeignClient;
 import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestParam;
 
 /**
  * Router callee feign client.