diff --git a/22.py b/22.py
index 72217f7..a1b76af 100644
--- a/22.py
+++ b/22.py
@@ -6,9 +6,12 @@ import random
 list=["石头","剪刀","布"]
 computer=random.choice(list)
 print("电脑出拳：",computer)
-if player==computer:
-    print("平局")
-elif (player=="石头" and computer=="剪刀") or (player=="剪刀" and computer=="布") or (player=="布" and computer=="石头"):
-    print("恭喜，你赢了")
+if player in list:
+    if player==computer:
+        print("平局")
+    elif (player=="石头" and computer=="剪刀") or (player=="剪刀" and computer=="布") or (player=="布" and computer=="石头"):
+        print("恭喜，你赢了")
+    else:
+        print("恭喜，你输了")
 else:
-    print("恭喜，你输了")
\ No newline at end of file
+    print("输入错误")
\ No newline at end of file