diff --git a/src/resources/components/ProcessTaskSearcher/custom-panel.vue b/src/resources/components/ProcessTaskSearcher/custom-panel.vue
index 8f31ed5dad28c922e5f78ec880c5a5a37fff44ba..9d9a8ebf6854af4b5571ff9b9586b91125945cda 100644
--- a/src/resources/components/ProcessTaskSearcher/custom-panel.vue
+++ b/src/resources/components/ProcessTaskSearcher/custom-panel.vue
@@ -242,6 +242,7 @@ export default {
         }
       }
       this.$set(condition, type, val);
+      this.$forceUpdate(); // 强制更新视图，切换表达式：为空或者不为空，表达式值没有更新，导致后面的文本框没有隐藏
     },
     changeJoinType(obj, val) {
       this.$set(obj, 'joinType', val);