diff --git a/src/core/apis/file.ts b/src/core/apis/file.ts
index 0f56c514..bca3dbd8 100644
--- a/src/core/apis/file.ts
+++ b/src/core/apis/file.ts
@@ -181,9 +181,12 @@ export class NTQQFileApi {
                 this.context.logger.logError('复制自定义缩略图失败', e);
             }
         }
+        context.deleteAfterSentFiles.push(thumbPath);
+        
         const thumbSize = (await fsPromises.stat(thumbPath)).size;
         const thumbMd5 = await calculateFileMD5(thumbPath);
-        context.deleteAfterSentFiles.push(path);
+        context.deleteAfterSentFiles.push(thumbPath);
+
 
         const uploadName = (fileName || _fileName).toLocaleLowerCase().endsWith(`.${fileExt.toLocaleLowerCase()}`) ? (fileName || _fileName) : `${fileName || _fileName}.${fileExt}`;
         return {
diff --git a/src/onebot/api/msg.ts b/src/onebot/api/msg.ts
index 1f220eed..8213c2a7 100644
--- a/src/onebot/api/msg.ts
+++ b/src/onebot/api/msg.ts
@@ -535,8 +535,12 @@ export class OneBotMsgApi {
             let thumb = sendMsg.data.thumb;
             if (thumb) {
                 const uri2LocalRes = await uriToLocalFile(this.core.NapCatTempPath, thumb);
-                if (uri2LocalRes.success) thumb = uri2LocalRes.path;
+                if (uri2LocalRes.success) {
+                    thumb = uri2LocalRes.path;
+                    context.deleteAfterSentFiles.push(thumb);
+                }
             }
+
             return await this.core.apis.FileApi.createValidSendVideoElement(context, path, fileName, thumb);
         },