diff --git a/tool/apt-fast/ss-apt-fast b/tool/apt-fast/ss-apt-fast
index 88c8838..9f8217a 100755
--- a/tool/apt-fast/ss-apt-fast
+++ b/tool/apt-fast/ss-apt-fast
@@ -231,17 +231,25 @@ _create_lock()
 {
     eval "exec $LCK_FD>\"$LCK_FILE.lock\""
 
-#    trap "cleanup_aptfast; exit_cleanup_state" EXIT
-#    This will hide the exit code
+    # 设置 trap 来清理资源
     trap "cleanup_aptfast" EXIT
     trap "cleanup_aptfast; exit 1" INT TERM
-	timer=0
-	until $(flock -xn $LCK_FD);do 
-	msg_already_running
-	sleep 1
-	let timer+=1
-	done
-	unset timer
+
+    timer=0
+    max_wait=180  # 最大等待时间为180秒（3分钟）
+
+    until $(flock -xn $LCK_FD); do
+        msg_already_running
+        sleep 1
+        let timer+=1
+
+        if [ $timer -ge $max_wait ]; then
+            echo "timeout"
+            exit 1
+        fi
+    done
+
+    unset timer
 }
 
 # unlock and remove the lock file