diff --git a/alist-sync-web.py b/alist-sync-web.py
index 3396bf1..7304b5d 100644
--- a/alist-sync-web.py
+++ b/alist-sync-web.py
@@ -504,6 +504,9 @@ def _execute_single_task(self, task: Dict):
         if task.get('regexPatterns'):
             os.environ['REGEX_PATTERNS'] = task.get('regexPatterns')
 
+        # 添加强制覆盖环境变量
+        os.environ['FORCE_OVERWRITE'] = str(task.get('forceOverwrite'))
+
         if task['syncMode'] == 'data':
             self._handle_data_sync(task)
         elif task['syncMode'] == 'file':
diff --git a/alist_sync.py b/alist_sync.py
index 1407bee..7d97803 100644
--- a/alist_sync.py
+++ b/alist_sync.py
@@ -497,6 +497,17 @@ def _copy_item_with_check(self, src_dir: str, dst_dir: str, item: Dict) -> bool:
                     logger.info(f"复制文件: {item_name}")
                     return self._copy_item(src_dir, dst_dir, item_name)
                 else:
+                    # 设置了强制覆盖后执行覆盖操作
+                    force_overwrite = os.environ.get("FORCE_OVERWRITE", "false").lower() == "true"
+                    if force_overwrite:
+                        logger.info(f"强制覆盖文件: {item_name}")
+                        # 删除旧文件
+                        if not self._directory_operation("remove", dir=dst_dir, names=[item_name]):
+                            logger.error(f"删除目标文件失败: {dst_path}")
+                            return False
+                        # 复制新文件
+                        return self._copy_item(src_dir, dst_dir, item_name)
+
                     # 获取源文件和目标文件信息
                     src_size = item.get("size")
                     dst_info = self.get_file_info(dst_path)
diff --git a/templates/index.html b/templates/index.html
index 5c3e3a5..8a43bb4 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -333,6 +333,12 @@ <h1>Alist-Sync 配置中心</h1>
 									<input type="radio" name="syncDelAction_1" value="delete" title="删除目标目录多余项" lay-group="syncDelAction_1">
 								</div>
 							</div>
+                            <div class="layui-form-item">
+                                <label class="layui-form-label" title="同步时强制覆盖，不判断文件大小和修改时间！谨慎选择！">强制覆盖</label>
+                                <div class="layui-input-block">
+                                    <input type="checkbox" name="forceOverwrite[]" title="同步强制覆盖文件">
+                                </div>
+                            </div>
 							<!-- 同步模式选择 -->
 							<div class="layui-form-item">
 								<label class="layui-form-label">同步模式</label>
@@ -1194,7 +1200,9 @@ <h1>Alist-Sync 配置中心</h1>
 		              syncDelAction: $task.find(`input[name="syncDelAction_${taskId}"]:checked`).val(),
 		              syncMode: syncMode,
 		              excludeDirs: $task.find('input[name="excludeDirs[]"]').val(),
-		              cron: $task.find('input[name="cron[]"]').val()
+		              cron: $task.find('input[name="cron[]"]').val(),
+					  // 收集强制覆盖状态
+					  forceOverwrite: $task.find(`input[name="forceOverwrite[]"]`).is(':checked')
 		          };
 
 		          if(syncMode === 'data') {
@@ -1504,6 +1512,9 @@ <h1>Alist-Sync 配置中心</h1>
 		      $task.find('input[name="regexPatterns[]"]').val(task.regexPatterns);
 		    }
 
+            // 回显强制覆盖状态
+            $task.find(`input[name="forceOverwrite[]"]`).prop('checked', task.forceOverwrite);
+
 		    // 等待一小段时间确保DOM更新完成
 		    await new Promise(resolve => setTimeout(resolve, 50));
 		  }