diff --git a/apollo-configservice/src/main/java/com/ctrip/framework/apollo/configservice/service/config/AbstractConfigService.java b/apollo-configservice/src/main/java/com/ctrip/framework/apollo/configservice/service/config/AbstractConfigService.java
index 3cd6978cf4c..8db6756aca5 100644
--- a/apollo-configservice/src/main/java/com/ctrip/framework/apollo/configservice/service/config/AbstractConfigService.java
+++ b/apollo-configservice/src/main/java/com/ctrip/framework/apollo/configservice/service/config/AbstractConfigService.java
@@ -122,11 +122,11 @@ public List<ConfigurationChange> calcConfigurationChanges(
 
     for (String newKey : newKeys) {
       changes.add(new ConfigurationChange(newKey, latestReleaseConfigurations.get(newKey),
-          ConfigurationChangeType.ADDED));
+          "ADDED"));
     }
 
     for (String removedKey : removedKeys) {
-      changes.add(new ConfigurationChange(removedKey, null, ConfigurationChangeType.DELETED));
+      changes.add(new ConfigurationChange(removedKey, null,"DELETED"));
     }
 
     for (String commonKey : commonKeys) {
@@ -136,7 +136,7 @@ public List<ConfigurationChange> calcConfigurationChanges(
         continue;
       }
       changes.add(
-          new ConfigurationChange(commonKey, currentValue, ConfigurationChangeType.MODIFIED));
+          new ConfigurationChange(commonKey, currentValue,"MODIFIED"));
     }
 
     return changes;
diff --git a/apollo-configservice/src/test/java/com/ctrip/framework/apollo/configservice/controller/ConfigControllerTest.java b/apollo-configservice/src/test/java/com/ctrip/framework/apollo/configservice/controller/ConfigControllerTest.java
index a4129d6765f..6d787337d25 100644
--- a/apollo-configservice/src/test/java/com/ctrip/framework/apollo/configservice/controller/ConfigControllerTest.java
+++ b/apollo-configservice/src/test/java/com/ctrip/framework/apollo/configservice/controller/ConfigControllerTest.java
@@ -516,7 +516,7 @@ public void testQueryConfigWithIncrementalSync() throws Exception {
     when(anotherRelease.getConfigurations()).thenReturn(anotherConfigurations);
 
     List<ConfigurationChange> configurationChanges=new ArrayList<>();
-    configurationChanges.add(new ConfigurationChange("apollo.public.bar", "bar", ConfigurationChangeType.ADDED));
+    configurationChanges.add(new ConfigurationChange("apollo.public.bar", "bar", "ADDED"));
     when(configService.calcConfigurationChanges(gson.fromJson(anotherConfigurations, configurationTypeReference),
                                                 gson.fromJson(someConfigurations, configurationTypeReference)))
             .thenReturn(configurationChanges);
@@ -602,9 +602,9 @@ public void testQueryConfigWithIncrementalSyncPublicNamespaceAndAppOverride() th
     String mergeServerSideConfigurations = "{\"apollo.public.bar\": \"bar\",\"apollo.public.foo\": \"foo-override\"}";
     String mergeClientSideConfigurations = "{\"apollo.public.foo.client\": \"foo.override\"}";
     List<ConfigurationChange> configurationChanges=new ArrayList<>();
-    configurationChanges.add(new ConfigurationChange("apollo.public.bar", "bar", ConfigurationChangeType.ADDED));
-    configurationChanges.add(new ConfigurationChange("apollo.public.foo", "foo-override", ConfigurationChangeType.ADDED));
-    configurationChanges.add(new ConfigurationChange("apollo.public.foo.client", null, ConfigurationChangeType.DELETED));
+    configurationChanges.add(new ConfigurationChange("apollo.public.bar", "bar", "ADDED"));
+    configurationChanges.add(new ConfigurationChange("apollo.public.foo", "foo-override", "ADDED"));
+    configurationChanges.add(new ConfigurationChange("apollo.public.foo.client", null, "DELETED"));
     when(configService.calcConfigurationChanges(gson.fromJson(mergeServerSideConfigurations, configurationTypeReference),
                                                 gson.fromJson(mergeClientSideConfigurations, configurationTypeReference)))
             .thenReturn(configurationChanges);
diff --git a/apollo-configservice/src/test/java/com/ctrip/framework/apollo/configservice/service/config/ConfigServiceWithChangeCacheTest.java b/apollo-configservice/src/test/java/com/ctrip/framework/apollo/configservice/service/config/ConfigServiceWithChangeCacheTest.java
index da14988090f..e0bf3150d03 100644
--- a/apollo-configservice/src/test/java/com/ctrip/framework/apollo/configservice/service/config/ConfigServiceWithChangeCacheTest.java
+++ b/apollo-configservice/src/test/java/com/ctrip/framework/apollo/configservice/service/config/ConfigServiceWithChangeCacheTest.java
@@ -103,7 +103,7 @@ public void testChangeConfigurationsWithAdd() {
     assertEquals(1, result.size());
     assertEquals(key2, result.get(0).getKey());
     assertEquals(value2, result.get(0).getNewValue());
-    assertEquals(ConfigurationChangeType.ADDED, result.get(0).getConfigurationChangeType());
+    assertEquals("ADDED", result.get(0).getConfigurationChangeType());
   }
   @Test
   public void testChangeConfigurationsWithLatestConfigIsNULL() {
@@ -119,7 +119,7 @@ public void testChangeConfigurationsWithLatestConfigIsNULL() {
     assertEquals(1, result.size());
     assertEquals(key1, result.get(0).getKey());
     assertEquals(null, result.get(0).getNewValue());
-    assertEquals(ConfigurationChangeType.DELETED, result.get(0).getConfigurationChangeType());
+    assertEquals("DELETED", result.get(0).getConfigurationChangeType());
   }
   @Test
   public void testChangeConfigurationsWithHistoryConfigIsNULL() {
@@ -134,7 +134,7 @@ public void testChangeConfigurationsWithHistoryConfigIsNULL() {
     assertEquals(1, result.size());
     assertEquals(key1, result.get(0).getKey());
     assertEquals(value1, result.get(0).getNewValue());
-    assertEquals(ConfigurationChangeType.ADDED, result.get(0).getConfigurationChangeType());
+    assertEquals("ADDED", result.get(0).getConfigurationChangeType());
   }
   @Test
   public void testChangeConfigurationsWithUpdate() {
@@ -152,7 +152,7 @@ public void testChangeConfigurationsWithUpdate() {
     assertEquals(1, result.size());
     assertEquals(key1, result.get(0).getKey());
     assertEquals(anotherValue1, result.get(0).getNewValue());
-    assertEquals(ConfigurationChangeType.MODIFIED, result.get(0).getConfigurationChangeType());
+    assertEquals("MODIFIED", result.get(0).getConfigurationChangeType());
   }
   @Test
   public void testChangeConfigurationsWithDelete() {
@@ -168,7 +168,7 @@ public void testChangeConfigurationsWithDelete() {
     assertEquals(1, result.size());
     assertEquals(key1, result.get(0).getKey());
     assertEquals(null, result.get(0).getNewValue());
-    assertEquals(ConfigurationChangeType.DELETED, result.get(0).getConfigurationChangeType());
+    assertEquals("DELETED", result.get(0).getConfigurationChangeType());
   }
 
   @Test