diff --git a/tdesign-component/example/assets/code/upload._uploadError.txt b/tdesign-component/example/assets/code/upload._uploadError.txt
deleted file mode 100644
index e005583a7..000000000
--- a/tdesign-component/example/assets/code/upload._uploadError.txt
+++ /dev/null
@@ -1,49 +0,0 @@
-
-  final List<TDUploadFile> files5 = [
-    TDUploadFile(
-        key: 1,
-        status: TDUploadFileStatus.error,
-        errorText: '上传失败',
-        remotePath:
-            'https://tdesign.gtimg.com/miniprogram/images/example4.png'),
-  ];
-
-  void onVaueChanged(List<TDUploadFile> fileList, List<TDUploadFile> value,
-      TDUploadType event) {
-    switch (event) {
-      case TDUploadType.add:
-        setState(() {
-          fileList.addAll(value);
-        });
-        break;
-      case TDUploadType.remove:
-        setState(() {
-          fileList.removeWhere((element) => element.key == value[0].key);
-        });
-        break;
-    }
-  }
-
-  void onClick(int key) {
-    print('点击 $key');
-  }
-
-  void onCancel() {
-    print('取消');
-  }
-
-  @Demo(group: 'upload')
-  Widget _uploadError(BuildContext context) {
-    return wrapDemoContainer('上传图片',
-        child: TDUpload(
-          files: files5,
-          multiple: true,
-          max: 9,
-          onClick: onClick,
-          onCancel: onCancel,
-          onError: print,
-          onValidate: print,
-          onChange: ((files, type) => onVaueChanged(files5, files, type)),
-        ));
-  }
-  
\ No newline at end of file
diff --git a/tdesign-component/example/assets/code/upload._uploadLoading.txt b/tdesign-component/example/assets/code/upload._uploadLoading.txt
deleted file mode 100644
index 551e8194b..000000000
--- a/tdesign-component/example/assets/code/upload._uploadLoading.txt
+++ /dev/null
@@ -1,55 +0,0 @@
-
-  final List<TDUploadFile> files3 = [
-    TDUploadFile(
-        key: 1,
-        status: TDUploadFileStatus.loading,
-        loadingText: '上传中...',
-        remotePath:
-            'https://tdesign.gtimg.com/miniprogram/images/example5.png'),
-    TDUploadFile(
-        key: 2,
-        status: TDUploadFileStatus.loading,
-        progress: 68,
-        remotePath:
-            'https://tdesign.gtimg.com/miniprogram/images/example4.png'),
-  ];
-
-  void onVaueChanged(List<TDUploadFile> fileList, List<TDUploadFile> value,
-      TDUploadType event) {
-    switch (event) {
-      case TDUploadType.add:
-        setState(() {
-          fileList.addAll(value);
-        });
-        break;
-      case TDUploadType.remove:
-        setState(() {
-          fileList.removeWhere((element) => element.key == value[0].key);
-        });
-        break;
-    }
-  }
-
-  void onClick(int key) {
-    print('点击 $key');
-  }
-
-  void onCancel() {
-    print('取消');
-  }
-
-  @Demo(group: 'upload')
-  Widget _uploadLoading(BuildContext context) {
-    return wrapDemoContainer('上传图片',
-        child: TDUpload(
-          files: files3,
-          multiple: true,
-          max: 9,
-          onClick: onClick,
-          onCancel: onCancel,
-          onError: print,
-          onValidate: print,
-          onChange: ((files, type) => onVaueChanged(files3, files, type)),
-        ));
-  }
-  
\ No newline at end of file
diff --git a/tdesign-component/example/assets/code/upload._uploadMultiple.txt b/tdesign-component/example/assets/code/upload._uploadMultiple.txt
deleted file mode 100644
index bb0103b8b..000000000
--- a/tdesign-component/example/assets/code/upload._uploadMultiple.txt
+++ /dev/null
@@ -1,55 +0,0 @@
-
-  final List<TDUploadFile> files2 = [
-    TDUploadFile(
-        key: 1,
-        remotePath:
-            'https://tdesign.gtimg.com/miniprogram/images/example4.png'),
-    TDUploadFile(
-        key: 2,
-        remotePath:
-            'https://tdesign.gtimg.com/miniprogram/images/example6.png'),
-    TDUploadFile(
-        key: 3,
-        remotePath:
-            'https://tdesign.gtimg.com/miniprogram/images/example5.png'),
-  ];
-
-  void onVaueChanged(List<TDUploadFile> fileList, List<TDUploadFile> value,
-      TDUploadType event) {
-    switch (event) {
-      case TDUploadType.add:
-        setState(() {
-          fileList.addAll(value);
-        });
-        break;
-      case TDUploadType.remove:
-        setState(() {
-          fileList.removeWhere((element) => element.key == value[0].key);
-        });
-        break;
-    }
-  }
-
-  void onClick(int key) {
-    print('点击 $key');
-  }
-
-  void onCancel() {
-    print('取消');
-  }
-
-  @Demo(group: 'upload')
-  Widget _uploadMultiple(BuildContext context) {
-    return wrapDemoContainer('多选上传',
-        child: TDUpload(
-          files: files2,
-          multiple: true,
-          max: 9,
-          onClick: onClick,
-          onCancel: onCancel,
-          onError: print,
-          onValidate: print,
-          onChange: ((files, type) => onVaueChanged(files2, files, type)),
-        ));
-  }
-  
\ No newline at end of file
diff --git a/tdesign-component/example/assets/code/upload._uploadRetry.txt b/tdesign-component/example/assets/code/upload._uploadRetry.txt
deleted file mode 100644
index 8da2c62f3..000000000
--- a/tdesign-component/example/assets/code/upload._uploadRetry.txt
+++ /dev/null
@@ -1,49 +0,0 @@
-
-  final List<TDUploadFile> files4 = [
-    TDUploadFile(
-        key: 1,
-        status: TDUploadFileStatus.retry,
-        retryText: '重新上传',
-        remotePath:
-            'https://tdesign.gtimg.com/miniprogram/images/example4.png'),
-  ];
-
-  void onVaueChanged(List<TDUploadFile> fileList, List<TDUploadFile> value,
-      TDUploadType event) {
-    switch (event) {
-      case TDUploadType.add:
-        setState(() {
-          fileList.addAll(value);
-        });
-        break;
-      case TDUploadType.remove:
-        setState(() {
-          fileList.removeWhere((element) => element.key == value[0].key);
-        });
-        break;
-    }
-  }
-
-  void onClick(int key) {
-    print('点击 $key');
-  }
-
-  void onCancel() {
-    print('取消');
-  }
-
-  @Demo(group: 'upload')
-  Widget _uploadRetry(BuildContext context) {
-    return wrapDemoContainer('上传图片',
-        child: TDUpload(
-          files: files4,
-          multiple: true,
-          max: 9,
-          onClick: onClick,
-          onCancel: onCancel,
-          onError: print,
-          onValidate: print,
-          onChange: ((files, type) => onVaueChanged(files4, files, type)),
-        ));
-  }
-  
\ No newline at end of file
diff --git a/tdesign-component/example/assets/code/upload._uploadSingle.txt b/tdesign-component/example/assets/code/upload._uploadSingle.txt
deleted file mode 100644
index 59a7f1296..000000000
--- a/tdesign-component/example/assets/code/upload._uploadSingle.txt
+++ /dev/null
@@ -1,39 +0,0 @@
-
-  final List<TDUploadFile> files1 = [];
-
-  void onVaueChanged(List<TDUploadFile> fileList, List<TDUploadFile> value,
-      TDUploadType event) {
-    switch (event) {
-      case TDUploadType.add:
-        setState(() {
-          fileList.addAll(value);
-        });
-        break;
-      case TDUploadType.remove:
-        setState(() {
-          fileList.removeWhere((element) => element.key == value[0].key);
-        });
-        break;
-    }
-  }
-
-  void onClick(int key) {
-    print('点击 $key');
-  }
-
-  void onCancel() {
-    print('取消');
-  }
-
-  @Demo(group: 'upload')
-  Widget _uploadSingle(BuildContext context) {
-    return wrapDemoContainer('单选上传',
-        child: TDUpload(
-          files: files1,
-          onClick: onClick,
-          onCancel: onCancel,
-          onError: print,
-          onValidate: print,
-          onChange: ((files, type) => onVaueChanged(files1, files, type)),
-        ));
-  }
diff --git a/tdesign-component/lib/src/components/cascader/td_multi_cascader.dart b/tdesign-component/lib/src/components/cascader/td_multi_cascader.dart
index a9850faa9..5d77e19f7 100644
--- a/tdesign-component/lib/src/components/cascader/td_multi_cascader.dart
+++ b/tdesign-component/lib/src/components/cascader/td_multi_cascader.dart
@@ -361,7 +361,7 @@ class _TDMultiCascaderState extends State<TDMultiCascader> with TickerProviderSt
                             _tabListData.insert(level, item);
                             _selectTabValue = item.value;
                             //下一级查询
-                            _getChildenListData(level + 1, item.value!);
+                            _getChildrenListData(level + 1, item.value!);
                           });
                         },
                         child: Container(
@@ -422,18 +422,18 @@ class _TDMultiCascaderState extends State<TDMultiCascader> with TickerProviderSt
     setState(() {});
   }
 
-  void _getChildenListData(int level, String value) {
+  void _getChildrenListData(int level, String value) {
     //查询层级数据
-    List<MultiCascaderListModel> selectLevelData = _listData.where((element) => element.level == (level)).toList();
+    var selectLevelData = _listData.where((element) => element.level == (level)).toList();
     //判断下级是否存在
     if (selectLevelData.isNotEmpty) {
       //获取下级数据
-      List<MultiCascaderListModel> childList =
+      var childList =
           selectLevelData.where((element) => element.parentValue == value).toList();
       _selectListData = childList;
       _currentTabIndex += 1;
     } else {
-      List<MultiCascaderListModel> result = _tabListData.where((element) => element.label != '选择选项').toList();
+      var result = _tabListData.where((element) => element.label != '选择选项').toList();
       widget.onChange(result);
       Navigator.of(context).pop();
     }