diff --git a/frontend/src/views/chart/components/senior/dialog/AssistLineEdit.vue b/frontend/src/views/chart/components/senior/dialog/AssistLineEdit.vue
index 29de039f5b..f249d3b5d3 100644
--- a/frontend/src/views/chart/components/senior/dialog/AssistLineEdit.vue
+++ b/frontend/src/views/chart/components/senior/dialog/AssistLineEdit.vue
@@ -81,7 +81,7 @@ export default {
       this.lineArr = JSON.parse(JSON.stringify(this.line))
     },
     addLine() {
-      this.lineArr.push(this.lineObj)
+      this.lineArr.push(JSON.parse(JSON.stringify(this.lineObj)))
       this.changeAssistLine()
     },
     removeLine(index) {