diff --git a/frontend/src/components/business/ms-associate-case/index.vue b/frontend/src/components/business/ms-associate-case/index.vue
index 231d681d36..771c77d198 100644
--- a/frontend/src/components/business/ms-associate-case/index.vue
+++ b/frontend/src/components/business/ms-associate-case/index.vue
@@ -279,7 +279,7 @@
       <div class="flex items-center">
         <slot name="footerLeft">
           <div v-if="props.associatedType === CaseLinkEnum.FUNCTIONAL" class="flex items-center">
-            <a-switch v-model:model-value="syncCase" size="small" type="line" />
+            <a-switch v-model:model-value="syncCase" size="small" type="line" @change="changeSyncCase" />
             <div class="ml-[8px]">{{ t('ms.case.associate.syncFunctionalCase') }}</div>
             <a-tooltip :content="t('ms.case.associate.addAutomaticallyCase')" position="top">
               <icon-question-circle
@@ -482,7 +482,7 @@
     set: (val) => val,
   });
 
-  const syncCase = ref<boolean>(true);
+  const syncCase = ref<boolean>(false);
 
   const folderName = computed(() => {
     switch (associationType.value) {
@@ -556,8 +556,8 @@
       associateType: 'FUNCTIONAL',
       totalCount: totalCount.value,
     };
-
-    if (props.associatedType === CaseLinkEnum.FUNCTIONAL) {
+    // 只有关联功能用例才有关联接口用例测试集和场景用例测试集且如果关闭则清空已选择测试集
+    if (props.associatedType === CaseLinkEnum.FUNCTIONAL && syncCase.value) {
       params.apiCaseCollectionId = apiCaseCollectionId.value;
       params.apiScenarioCollectionId = apiScenarioCollectionId.value;
       params.syncCase = syncCase.value;
@@ -663,6 +663,15 @@
     }
   }
 
+  function changeSyncCase(value: string | number | boolean, ev: Event) {
+    if (value) {
+      initTestSet();
+    } else {
+      apiCaseCollectionId.value = '';
+      apiScenarioCollectionId.value = '';
+    }
+  }
+
   function changeProjectHandler(visible: boolean) {
     if (visible && !getIsVisited()) {
       selectPopVisible.value = true;
@@ -695,9 +704,6 @@
         associationType.value = props.associatedType;
         activeFolder.value = 'all';
         initProjectList();
-        if (props.associatedType === 'FUNCTIONAL') {
-          initTestSet();
-        }
       }
       selectPopVisible.value = false;
       keyword.value = '';
@@ -718,6 +724,9 @@
             excludeIds: new Set(excludeIds),
           };
         });
+        // 保存后不再回显，则清空
+      } else {
+        clearSelector();
       }
     }
   );