diff --git a/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/api/NamespaceOpenApiService.java b/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/api/NamespaceOpenApiService.java
index 760130fb..06012236 100644
--- a/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/api/NamespaceOpenApiService.java
+++ b/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/api/NamespaceOpenApiService.java
@@ -26,9 +26,9 @@
  */
 public interface NamespaceOpenApiService {
 
-  OpenNamespaceDTO getNamespace(String appId, String env, String clusterName, String namespaceName);
+  OpenNamespaceDTO getNamespace(String appId, String env, String clusterName, String namespaceName, boolean fillItemDetail);
 
-  List<OpenNamespaceDTO> getNamespaces(String appId, String env, String clusterName);
+  List<OpenNamespaceDTO> getNamespaces(String appId, String env, String clusterName, boolean fillItemDetail);
 
   OpenAppNamespaceDTO createAppNamespace(OpenAppNamespaceDTO appNamespaceDTO);
 
diff --git a/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/client/ApolloOpenApiClient.java b/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/client/ApolloOpenApiClient.java
index 6981397e..e7a0e2e9 100644
--- a/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/client/ApolloOpenApiClient.java
+++ b/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/client/ApolloOpenApiClient.java
@@ -100,10 +100,18 @@ public List<OpenAppDTO> getAppsByIds(List<String> appIds) {
   }
 
   /**
-   * Get the namespaces
+   * @deprecated use {@link ApolloOpenApiClient#getNamespaces(String, String, String, boolean)} instead
    */
   public List<OpenNamespaceDTO> getNamespaces(String appId, String env, String clusterName) {
-    return namespaceService.getNamespaces(appId, env, clusterName);
+    return namespaceService.getNamespaces(appId, env, clusterName, true);
+  }
+
+  /**
+   * Get the namespaces
+   * @since 2.4.0
+   */
+  public List<OpenNamespaceDTO> getNamespaces(String appId, String env, String clusterName, boolean fillItemDetail) {
+    return namespaceService.getNamespaces(appId, env, clusterName, fillItemDetail);
   }
 
   /**
@@ -125,10 +133,18 @@ public OpenClusterDTO createCluster(String env, OpenClusterDTO openClusterDTO) {
   }
 
   /**
-   * Get the namespace
+   * @deprecated use {@link ApolloOpenApiClient#getNamespace(String, String, String, String, boolean)} instead
    */
   public OpenNamespaceDTO getNamespace(String appId, String env, String clusterName, String namespaceName) {
-    return namespaceService.getNamespace(appId, env, clusterName, namespaceName);
+    return namespaceService.getNamespace(appId, env, clusterName, namespaceName, true);
+  }
+
+  /**
+   * Get the namespace
+   * @since 2.4.0
+   */
+  public OpenNamespaceDTO getNamespace(String appId, String env, String clusterName, String namespaceName, boolean fillItemDetail) {
+    return namespaceService.getNamespace(appId, env, clusterName, namespaceName, fillItemDetail);
   }
 
   /**
diff --git a/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/client/service/NamespaceOpenApiService.java b/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/client/service/NamespaceOpenApiService.java
index b1a0a530..f61a2cc2 100644
--- a/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/client/service/NamespaceOpenApiService.java
+++ b/apollo-openapi/src/main/java/com/ctrip/framework/apollo/openapi/client/service/NamespaceOpenApiService.java
@@ -41,7 +41,7 @@ public NamespaceOpenApiService(CloseableHttpClient client, String baseUrl, Gson
   }
 
   @Override
-  public OpenNamespaceDTO getNamespace(String appId, String env, String clusterName, String namespaceName) {
+  public OpenNamespaceDTO getNamespace(String appId, String env, String clusterName, String namespaceName, boolean fillItemDetail) {
     if (Strings.isNullOrEmpty(clusterName)) {
       clusterName = ConfigConsts.CLUSTER_NAME_DEFAULT;
     }
@@ -58,6 +58,8 @@ public OpenNamespaceDTO getNamespace(String appId, String env, String clusterNam
         .clustersPathVal(clusterName)
         .namespacesPathVal(namespaceName);
 
+    pathBuilder.addParam("fillItemDetail", fillItemDetail);
+
     try (CloseableHttpResponse response = get(pathBuilder)) {
       return gson.fromJson(EntityUtils.toString(response.getEntity()), OpenNamespaceDTO.class);
     } catch (Throwable ex) {
@@ -68,7 +70,7 @@ public OpenNamespaceDTO getNamespace(String appId, String env, String clusterNam
   }
 
   @Override
-  public List<OpenNamespaceDTO> getNamespaces(String appId, String env, String clusterName) {
+  public List<OpenNamespaceDTO> getNamespaces(String appId, String env, String clusterName, boolean fillItemDetail) {
     if (Strings.isNullOrEmpty(clusterName)) {
       clusterName = ConfigConsts.CLUSTER_NAME_DEFAULT;
     }
@@ -82,6 +84,8 @@ public List<OpenNamespaceDTO> getNamespaces(String appId, String env, String clu
         .clustersPathVal(clusterName)
         .customResource("namespaces");
 
+    pathBuilder.addParam("fillItemDetail", fillItemDetail);
+
     try (CloseableHttpResponse response = get(pathBuilder)) {
       return gson.fromJson(EntityUtils.toString(response.getEntity()), OPEN_NAMESPACE_DTO_LIST_TYPE);
     } catch (Throwable ex) {
diff --git a/apollo-openapi/src/test/java/com/ctrip/framework/apollo/openapi/client/service/NamespaceOpenApiServiceTest.java b/apollo-openapi/src/test/java/com/ctrip/framework/apollo/openapi/client/service/NamespaceOpenApiServiceTest.java
index 31c656a2..1ea6f414 100644
--- a/apollo-openapi/src/test/java/com/ctrip/framework/apollo/openapi/client/service/NamespaceOpenApiServiceTest.java
+++ b/apollo-openapi/src/test/java/com/ctrip/framework/apollo/openapi/client/service/NamespaceOpenApiServiceTest.java
@@ -58,7 +58,7 @@ public void setUp() throws Exception {
   public void testGetNamespace() throws Exception {
     final ArgumentCaptor<HttpGet> request = ArgumentCaptor.forClass(HttpGet.class);
 
-    namespaceOpenApiService.getNamespace(someAppId, someEnv, someCluster, someNamespace);
+    namespaceOpenApiService.getNamespace(someAppId, someEnv, someCluster, someNamespace, true);
 
     verify(httpClient, times(1)).execute(request.capture());
 
@@ -73,7 +73,7 @@ public void testGetNamespace() throws Exception {
   public void testGetNamespaceWithError() throws Exception {
     when(statusLine.getStatusCode()).thenReturn(404);
 
-    namespaceOpenApiService.getNamespace(someAppId, someEnv, someCluster, someNamespace);
+    namespaceOpenApiService.getNamespace(someAppId, someEnv, someCluster, someNamespace, true);
   }
 
   @Test
@@ -83,7 +83,7 @@ public void testGetNamespaces() throws Exception {
 
     final ArgumentCaptor<HttpGet> request = ArgumentCaptor.forClass(HttpGet.class);
 
-    namespaceOpenApiService.getNamespaces(someAppId, someEnv, someCluster);
+    namespaceOpenApiService.getNamespaces(someAppId, someEnv, someCluster, true);
 
     verify(httpClient, times(1)).execute(request.capture());
 
@@ -98,7 +98,7 @@ public void testGetNamespaces() throws Exception {
   public void testGetNamespacesWithError() throws Exception {
     when(statusLine.getStatusCode()).thenReturn(404);
 
-    namespaceOpenApiService.getNamespaces(someAppId, someEnv, someCluster);
+    namespaceOpenApiService.getNamespaces(someAppId, someEnv, someCluster, true);
   }
 
   @Test