diff --git a/frontend/src/views/chart/components/senior/AssistLine.vue b/frontend/src/views/chart/components/senior/AssistLine.vue
index 9e8a33ceda..4ec45b1181 100644
--- a/frontend/src/views/chart/components/senior/AssistLine.vue
+++ b/frontend/src/views/chart/components/senior/AssistLine.vue
@@ -86,6 +86,7 @@ export default {
         } else {
           this.assistLine = []
         }
+        this.lineArr = JSON.parse(JSON.stringify(this.assistLine))
       }
     },
     changeAssistLine() {