diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 55af5b2..f81e081 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -50,21 +50,16 @@ jobs:
       # 文件后缀列表
       - name: Set file extensions
         run: |
-          export FILE_EXTENSIONS=".txt .jpg .png" # 以空格分隔多个文件后缀
-          echo "FILE_EXTENSIONS: $FILE_EXTENSIONS"
+          # 以空格分隔多个文件后缀
+          FILE_EXTENSIONS=".txt .jpg .png" >> $GITHUB_ENV
 
       # 创建一个备份目录，并将当前目录及子目录中的所有指定后缀文件复制到备份目录，并保持路径
       - name: Backup local files with specified extensions
-        env:
-          FILE_EXTENSIONS: $FILE_EXTENSIONS
         run: |
           mkdir -p backup
-          echo "FILE_EXTENSIONS: $FILE_EXTENSIONS"
-          (for EXT in $FILE_EXTENSIONS; do
-            echo "$EXT"
+          for EXT in $FILE_EXTENSIONS; do
             rsync -av --include="*/" --include="*$EXT" --exclude="*" ./ backup/
-          done;)
-          echo "$EXT"
+          done
 
       # 将上游main分支的更改强制推送到当前main分支
       - name: Force push changes from upstream to current main branch
@@ -83,10 +78,9 @@ jobs:
       # 从备份目录将指定后缀文件还原到当前目录及子目录中，然后删除备份目录
       - name: Restore local files with specified extensions and delete backup
         run: |
-          (for EXT in $FILE_EXTENSIONS; do
-            echo "$EXT"
+          for EXT in $FILE_EXTENSIONS; do
             rsync -av --include="*/" --include="*$EXT" --exclude="*" backup/ ./
-          done;)
+          done
           rm -rf backup
 
       # 运行主程序main.py