diff --git a/example/lib/main.dart b/example/lib/main.dart
index 7b80312..5c8803f 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -4,7 +4,6 @@ import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 import 'package:tencent_kit/tencent_kit.dart';
-import 'package:tencent_kit/tencent_kit_platform_interface.dart';
 import 'package:tencent_kit_example/api/model/tencent_api_resp.dart';
 import 'package:tencent_kit_example/api/model/tencent_unionid_resp.dart';
 import 'package:tencent_kit_example/api/tencent_api.dart';
diff --git a/lib/src/tencent_constant.dart b/lib/src/constant.dart
similarity index 100%
rename from lib/src/tencent_constant.dart
rename to lib/src/constant.dart
diff --git a/lib/src/tencent_kit_method_channel.dart b/lib/src/tencent_kit_method_channel.dart
index 164cbb8..0dd1a96 100644
--- a/lib/src/tencent_kit_method_channel.dart
+++ b/lib/src/tencent_kit_method_channel.dart
@@ -2,8 +2,8 @@ import 'dart:async';
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
+import 'package:tencent_kit/src/constant.dart';
 import 'package:tencent_kit/src/model/resp.dart';
-import 'package:tencent_kit/src/tencent_constant.dart';
 import 'package:tencent_kit/src/tencent_kit_platform_interface.dart';
 
 /// An implementation of [TencentKitPlatform] that uses method channels.
diff --git a/lib/src/tencent_kit_platform_interface.dart b/lib/src/tencent_kit_platform_interface.dart
index 94eab95..a2cd388 100644
--- a/lib/src/tencent_kit_platform_interface.dart
+++ b/lib/src/tencent_kit_platform_interface.dart
@@ -1,6 +1,6 @@
 import 'package:plugin_platform_interface/plugin_platform_interface.dart';
+import 'package:tencent_kit/src/constant.dart';
 import 'package:tencent_kit/src/model/resp.dart';
-import 'package:tencent_kit/src/tencent_constant.dart';
 import 'package:tencent_kit/src/tencent_kit_method_channel.dart';
 
 abstract class TencentKitPlatform extends PlatformInterface {
diff --git a/lib/tencent_kit.dart b/lib/tencent_kit.dart
index 66dff3a..2c00ac1 100644
--- a/lib/tencent_kit.dart
+++ b/lib/tencent_kit.dart
@@ -1,4 +1,5 @@
 library tencent_kit;
 
+export 'src/constant.dart';
 export 'src/model/resp.dart';
-export 'src/tencent_constant.dart';
+export 'src/tencent_kit_platform_interface.dart';
diff --git a/lib/tencent_kit_platform_interface.dart b/lib/tencent_kit_platform_interface.dart
index 8c71924..fc0bac7 100644
--- a/lib/tencent_kit_platform_interface.dart
+++ b/lib/tencent_kit_platform_interface.dart
@@ -1,6 +1,6 @@
 library tencent_kit_platform_interface;
 
+export 'src/constant.dart';
 export 'src/model/resp.dart';
-export 'src/tencent_constant.dart';
 export 'src/tencent_kit_method_channel.dart';
 export 'src/tencent_kit_platform_interface.dart';
diff --git a/test/tencent_test.dart b/test/tencent_test.dart
index d22cae5..4a3c66b 100644
--- a/test/tencent_test.dart
+++ b/test/tencent_test.dart
@@ -2,8 +2,8 @@ import 'dart:async';
 
 import 'package:flutter_test/flutter_test.dart';
 import 'package:plugin_platform_interface/plugin_platform_interface.dart';
+import 'package:tencent_kit/src/constant.dart';
 import 'package:tencent_kit/src/model/resp.dart';
-import 'package:tencent_kit/src/tencent_constant.dart';
 import 'package:tencent_kit/src/tencent_kit_method_channel.dart';
 import 'package:tencent_kit/src/tencent_kit_platform_interface.dart';