diff --git a/frontend/src/business/components/track/case/components/TestCaseScenarioRelate.vue b/frontend/src/business/components/track/case/components/TestCaseScenarioRelate.vue
index b12851d0a5..c349578f9b 100644
--- a/frontend/src/business/components/track/case/components/TestCaseScenarioRelate.vue
+++ b/frontend/src/business/components/track/case/components/TestCaseScenarioRelate.vue
@@ -70,7 +70,9 @@ export default {
     open() {
       this.init();
       this.$refs.baseRelevance.open();
-      this.$refs.apiCaseList.clear();
+      if (this.$refs.apiCaseList) {
+        this.$refs.apiCaseList.clear();
+      }
     },
     init() {
       if (this.$refs.apiCaseList) {