diff --git a/src-tauri/src/downloader/download_chunk_task.rs b/src-tauri/src/downloader/download_chunk_task.rs
index 753405b..f4f262d 100644
--- a/src-tauri/src/downloader/download_chunk_task.rs
+++ b/src-tauri/src/downloader/download_chunk_task.rs
@@ -67,7 +67,10 @@ impl DownloadChunkTask {
                         }
                     }
                 },
-
+                // FIXME: 直接返回chunk_index存在进度误标风险
+                // 上层会将这个分片标记为已下载，而分片其实是被打断的
+                // 应该把返回值改成 enum DownloadChunkResult { Downloaded(idx), Interrupted }
+                // 然后由上层处理
                 _ = restart_receiver.changed() => break Ok(self.chunk_index),
 
                 _ = delete_receiver.changed() => break Ok(self.chunk_index),
diff --git a/src-tauri/src/downloader/download_manager.rs b/src-tauri/src/downloader/download_manager.rs
index aee4fd9..645e381 100644
--- a/src-tauri/src/downloader/download_manager.rs
+++ b/src-tauri/src/downloader/download_manager.rs
@@ -158,7 +158,9 @@ impl DownloadManager {
                 tracing::error!(err_title, message);
                 continue;
             };
-
+            // TODO: 应该先发删除新号再删文件
+            // 因为发信号失败会把任务重新塞回去
+            // 目前先删文件会导致发信号失败时出现 任务还在但文件没了的情况
             if let Err(err) = self.delete_progress_file(task_id) {
                 let err_title = "删除下载任务失败";
                 let message = err.to_message();
diff --git a/src-tauri/src/downloader/download_task.rs b/src-tauri/src/downloader/download_task.rs
index 3fb0372..3ca0793 100644
--- a/src-tauri/src/downloader/download_task.rs
+++ b/src-tauri/src/downloader/download_task.rs
@@ -438,6 +438,10 @@ impl DownloadTask {
         let updated_progress = {
             let mut progress = self.progress.write();
             update_fn(&mut progress);
+            // TODO: 这里应该返回 progress.clone()
+            // 专门用一个 {} 框出来就是为了避免在emit和save期间仍持有写锁
+            // 然而这里弄错了progress的类型
+            // 错把progress当成了DownloadProgress，实则类型为RwLockWriteGuard
             progress
         };
         // 发送更新事件并保存到文件