diff --git a/spring-cloud-alibaba-nacos-discovery/src/test/java/com/alibaba/cloud/nacos/NacosDiscoveryClientTests.java b/spring-cloud-alibaba-nacos-discovery/src/test/java/com/alibaba/cloud/nacos/NacosDiscoveryClientTests.java
index 6fe6680c..4e13cd20 100644
--- a/spring-cloud-alibaba-nacos-discovery/src/test/java/com/alibaba/cloud/nacos/NacosDiscoveryClientTests.java
+++ b/spring-cloud-alibaba-nacos-discovery/src/test/java/com/alibaba/cloud/nacos/NacosDiscoveryClientTests.java
@@ -60,7 +60,8 @@ public class NacosDiscoveryClientTests {
 		NamingService namingService = mock(NamingService.class);
 
 		when(nacosDiscoveryProperties.namingServiceInstance()).thenReturn(namingService);
-		when(namingService.selectInstances(eq(serviceName), eq(true)))
+		when(nacosDiscoveryProperties.getGroup()).thenReturn("DEFAULT");
+		when(namingService.selectInstances(eq(serviceName),eq("DEFAULT"), eq(true)))
 				.thenReturn(instances);
 
 		NacosDiscoveryClient discoveryClient = new NacosDiscoveryClient(
@@ -103,7 +104,8 @@ public class NacosDiscoveryClientTests {
 				nacosDiscoveryProperties);
 
 		when(nacosDiscoveryProperties.namingServiceInstance()).thenReturn(namingService);
-		when(namingService.getServicesOfServer(eq(1), eq(Integer.MAX_VALUE)))
+		when(nacosDiscoveryProperties.getGroup()).thenReturn("DEFAULT");
+		when(namingService.getServicesOfServer(eq(1), eq(Integer.MAX_VALUE),eq("DEFAULT")))
 				.thenReturn(nacosServices);
 
 		List<String> services = discoveryClient.getServices();
diff --git a/spring-cloud-alibaba-nacos-discovery/src/test/java/com/alibaba/cloud/nacos/ribbon/NacosServerListTests.java b/spring-cloud-alibaba-nacos-discovery/src/test/java/com/alibaba/cloud/nacos/ribbon/NacosServerListTests.java
index 2732f2b4..84ec00aa 100644
--- a/spring-cloud-alibaba-nacos-discovery/src/test/java/com/alibaba/cloud/nacos/ribbon/NacosServerListTests.java
+++ b/spring-cloud-alibaba-nacos-discovery/src/test/java/com/alibaba/cloud/nacos/ribbon/NacosServerListTests.java
@@ -52,7 +52,8 @@ public class NacosServerListTests {
 		NamingService namingService = mock(NamingService.class);
 
 		when(nacosDiscoveryProperties.namingServiceInstance()).thenReturn(namingService);
-		when(namingService.selectInstances(anyString(), eq(true))).thenReturn(null);
+		when(namingService.selectInstances(anyString(), eq("DEFAULT"), eq(true)))
+				.thenReturn(null);
 
 		NacosServerList serverList = new NacosServerList(nacosDiscoveryProperties);
 		List<NacosServer> servers = serverList.getInitialListOfServers();
@@ -73,7 +74,9 @@ public class NacosServerListTests {
 		NamingService namingService = mock(NamingService.class);
 
 		when(nacosDiscoveryProperties.namingServiceInstance()).thenReturn(namingService);
-		when(namingService.selectInstances(eq("test-service"), eq(true)))
+		when(nacosDiscoveryProperties.getGroup()).thenReturn("DEFAULT");
+		when(nacosDiscoveryProperties.getGroup()).thenReturn("DEFAULT");
+		when(namingService.selectInstances(eq("test-service"), eq("DEFAULT"), eq(true)))
 				.thenReturn(instances);
 
 		IClientConfig clientConfig = mock(IClientConfig.class);
@@ -105,7 +108,8 @@ public class NacosServerListTests {
 		NamingService namingService = mock(NamingService.class);
 
 		when(nacosDiscoveryProperties.namingServiceInstance()).thenReturn(namingService);
-		when(namingService.selectInstances(eq("test-service"), eq(true)))
+		when(nacosDiscoveryProperties.getGroup()).thenReturn("DEFAULT");
+		when(namingService.selectInstances(eq("test-service"), eq("DEFAULT"), eq(true)))
 				.thenReturn(instances.stream().filter(Instance::isHealthy)
 						.collect(Collectors.toList()));
 
@@ -142,7 +146,8 @@ public class NacosServerListTests {
 		NamingService namingService = mock(NamingService.class);
 
 		when(nacosDiscoveryProperties.namingServiceInstance()).thenReturn(namingService);
-		when(namingService.selectInstances(eq("test-service"), eq(true)))
+		when(nacosDiscoveryProperties.getGroup()).thenReturn("DEFAULT");
+		when(namingService.selectInstances(eq("test-service"), eq("DEFAULT"), eq(true)))
 				.thenReturn(instances.stream().filter(Instance::isHealthy)
 						.collect(Collectors.toList()));