diff --git a/.gitea/workflows/cd.yml b/.gitea/workflows/cd.yml
index 3aceb6d..248f8d1 100644
--- a/.gitea/workflows/cd.yml
+++ b/.gitea/workflows/cd.yml
@@ -61,6 +61,9 @@ jobs:
           PID=$(cat "$PID_FILE")
           echo "pid=$PID"
           if ! kill -0 "$PID" 2>/dev/null; then
+            kill -0 "$PID" 2>/dev/null
+            result=$?
+            echo "exit code = $result"   # 0 表示活着，非0表示死了
             echo "pid $PID not alive" >&2
             sudo -n tail -n 50 "$DEPLOY_DIR/logs/app.log" >&2 || true
             exit 1