diff --git a/mes/qd/src/views/login.vue b/mes/qd/src/views/login.vue
index 7f19a493..d9d2401f 100644
--- a/mes/qd/src/views/login.vue
+++ b/mes/qd/src/views/login.vue
@@ -63,7 +63,10 @@ export default {
       },
       loginRules: {
         username: [{ required: true, trigger: 'blur', message: '用户名不能为空' }],
-        password: [{ required: true, trigger: 'blur', message: '密码不能为空' }],
+        password: [
+          { required: true, trigger: 'blur', message: '密码不能为空' },
+          { max: 20, message: '密码不能超过20个字符', trigger: ['blur', 'change'] }
+        ],
         code: [{ required: true, trigger: 'change', message: '验证码不能为空' }]
       },
       loading: false,