diff --git a/src/components/MFA/index.vue b/src/components/MFA/index.vue
index 4642b0a8..73310696 100644
--- a/src/components/MFA/index.vue
+++ b/src/components/MFA/index.vue
@@ -167,6 +167,7 @@ export default {
           this.timer = setInterval(() => {
             this.second--;
             if (this.second <= 0) {
+              this.flag = false;
               clearInterval(this.timer);
               this.timer = null;
             }
@@ -201,7 +202,7 @@ export default {
     margin-right: 5px;
   }
 }
-::v-deep .el-dialog__header{
+::v-deep .el-dialog__header {
   font-weight: bold;
 }
 </style>
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