diff --git a/apollo-adminservice/src/main/java/com/ctrip/framework/apollo/adminservice/aop/NamespaceUnlockAspect.java b/apollo-adminservice/src/main/java/com/ctrip/framework/apollo/adminservice/aop/NamespaceUnlockAspect.java
index 24f531208f4d447dc3d23442ca0d46451b135cc6..bdeef591cf48d4e172f9cf3855a5d9e8af047175 100644
--- a/apollo-adminservice/src/main/java/com/ctrip/framework/apollo/adminservice/aop/NamespaceUnlockAspect.java
+++ b/apollo-adminservice/src/main/java/com/ctrip/framework/apollo/adminservice/aop/NamespaceUnlockAspect.java
@@ -133,9 +133,10 @@ public class NamespaceUnlockAspect {
     if (parentNamespace == null) {
       generateMapFromItems(namespaceItems, configurationFromItems);
     } else {//child namespace
-      List<Item> parentItems = itemService.findItems(parentNamespace.getId());
-
-      generateMapFromItems(parentItems, configurationFromItems);
+      Release parentRelease = releaseService.findLatestActiveRelease(parentNamespace);
+      if (parentRelease != null) {
+        configurationFromItems = gson.fromJson(parentRelease.getConfigurations(), GsonType.CONFIG);
+      }
       generateMapFromItems(namespaceItems, configurationFromItems);
     }
 
diff --git a/apollo-adminservice/src/test/java/com/ctrip/framework/apollo/adminservice/aop/NamespaceUnlockAspectTest.java b/apollo-adminservice/src/test/java/com/ctrip/framework/apollo/adminservice/aop/NamespaceUnlockAspectTest.java
index cc3f4d2ddd87ee7334e18d0860ff6e48ca77b020..28ff81320ec9fb43d89cc8043273a4351de60907 100644
--- a/apollo-adminservice/src/test/java/com/ctrip/framework/apollo/adminservice/aop/NamespaceUnlockAspectTest.java
+++ b/apollo-adminservice/src/test/java/com/ctrip/framework/apollo/adminservice/aop/NamespaceUnlockAspectTest.java
@@ -103,18 +103,18 @@ public class NamespaceUnlockAspectTest {
   public void testChildNamespaceModified() {
     long childNamespaceId = 1, parentNamespaceId = 2;
     Namespace childNamespace = createNamespace(childNamespaceId);
-    Namespace parentNamespace = createNamespace(childNamespaceId);
+    Namespace parentNamespace = createNamespace(parentNamespaceId);
 
     Release childRelease = createRelease("{\"k1\":\"v1\", \"k2\":\"v2\"}");
     List<Item> childItems = Arrays.asList(createItem("k1", "v3"));
-    List<Item> parentItems = Arrays.asList(createItem("k1", "v1"), createItem("k2", "v2"));
+    Release parentRelease = createRelease("{\"k1\":\"v1\", \"k2\":\"v2\"}");
 
     when(releaseService.findLatestActiveRelease(childNamespace)).thenReturn(childRelease);
+    when(releaseService.findLatestActiveRelease(parentNamespace)).thenReturn(parentRelease);
     when(itemService.findItems(childNamespaceId)).thenReturn(childItems);
-    when(itemService.findItems(parentNamespaceId)).thenReturn(parentItems);
-    when(namespaceService.findParentNamespace(parentNamespace)).thenReturn(parentNamespace);
+    when(namespaceService.findParentNamespace(childNamespace)).thenReturn(parentNamespace);
 
-    boolean isModified = namespaceUnlockAspect.isModified(parentNamespace);
+    boolean isModified = namespaceUnlockAspect.isModified(childNamespace);
 
     Assert.assertTrue(isModified);
   }
@@ -123,18 +123,37 @@ public class NamespaceUnlockAspectTest {
   public void testChildNamespaceNotModified() {
     long childNamespaceId = 1, parentNamespaceId = 2;
     Namespace childNamespace = createNamespace(childNamespaceId);
-    Namespace parentNamespace = createNamespace(childNamespaceId);
+    Namespace parentNamespace = createNamespace(parentNamespaceId);
 
-    Release childRelease = createRelease("{\"k1\":\"v1\", \"k2\":\"v2\"}");
-    List<Item> childItems = Arrays.asList(createItem("k1", "v1"));
-    List<Item> parentItems = Arrays.asList(createItem("k2", "v2"));
+    Release childRelease = createRelease("{\"k1\":\"v3\", \"k2\":\"v2\"}");
+    List<Item> childItems = Arrays.asList(createItem("k1", "v3"));
+    Release parentRelease = createRelease("{\"k1\":\"v1\", \"k2\":\"v2\"}");
+
+    when(releaseService.findLatestActiveRelease(childNamespace)).thenReturn(childRelease);
+    when(releaseService.findLatestActiveRelease(parentNamespace)).thenReturn(parentRelease);
+    when(itemService.findItems(childNamespaceId)).thenReturn(childItems);
+    when(namespaceService.findParentNamespace(childNamespace)).thenReturn(parentNamespace);
+
+    boolean isModified = namespaceUnlockAspect.isModified(childNamespace);
+
+    Assert.assertFalse(isModified);
+  }
+
+  @Test
+  public void testParentNamespaceNotReleased() {
+    long childNamespaceId = 1, parentNamespaceId = 2;
+    Namespace childNamespace = createNamespace(childNamespaceId);
+    Namespace parentNamespace = createNamespace(parentNamespaceId);
+
+    Release childRelease = createRelease("{\"k1\":\"v3\", \"k2\":\"v2\"}");
+    List<Item> childItems = Arrays.asList(createItem("k1", "v2"), createItem("k2", "v2"));
 
     when(releaseService.findLatestActiveRelease(childNamespace)).thenReturn(childRelease);
+    when(releaseService.findLatestActiveRelease(parentNamespace)).thenReturn(null);
     when(itemService.findItems(childNamespaceId)).thenReturn(childItems);
-    when(itemService.findItems(parentNamespaceId)).thenReturn(parentItems);
-    when(namespaceService.findParentNamespace(parentNamespace)).thenReturn(parentNamespace);
+    when(namespaceService.findParentNamespace(childNamespace)).thenReturn(parentNamespace);
 
-    boolean isModified = namespaceUnlockAspect.isModified(parentNamespace);
+    boolean isModified = namespaceUnlockAspect.isModified(childNamespace);
 
     Assert.assertTrue(isModified);
   }