diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 226c56e..46e465c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -57,6 +57,11 @@ jobs:
           else
             echo "main.yml file is inconsistent"
             echo "MAIN_YML_FILES_INCONSISTENT=True" >> $GITHUB_OUTPUT
+            echo "::error title=main.yml file is inconsistent!::"\
+            "The contents of your current branch's 'main.yml' file "\
+            "do not match the contents of your upstream branch's "\
+            "'main.yml' file! You need to synchronize the upstream "\
+            "branch manually!"
           fi
 
       # 定义备份和还原的文件后缀列表