diff --git a/src/pages/Home/components/LoginForm.vue b/src/pages/Home/components/LoginForm.vue
index ea325d1..f744800 100644
--- a/src/pages/Home/components/LoginForm.vue
+++ b/src/pages/Home/components/LoginForm.vue
@@ -127,7 +127,12 @@ const handleKeyDown = (e: KeyboardEvent) => {
       (activeIndex.value - 1 + suggestList.value.length) % suggestList.value.length
   } else if (e.key === 'Enter' && activeIndex.value !== -1) {
     e.preventDefault()
-    selectSuggest(suggestList.value[activeIndex.value])
+    // 修复之前的 [object Object] 问题，确保传入的是 .full
+    selectSuggest(suggestList.value[activeIndex.value].full)
+  } else if (e.key === 'Tab' && activeIndex.value !== -1) {
+    // 💡 新增：按下 Tab 键时也自动补全
+    e.preventDefault()
+    selectSuggest(suggestList.value[activeIndex.value].full)
   }
 }
 
@@ -160,7 +165,10 @@ const selectSuggest = (fullSuffix: string) => {
 
 const onBlur = () => {
   // 必须延迟，否则点击列表时会先触发 blur 导致列表消失无法选中
-  setTimeout(() => (isFocused.value = false), 200)
+  setTimeout(() => {
+    isFocused.value = false
+    activeIndex.value = -1 // 重置索引
+  }, 200)
 }
 
 // 3. 校验逻辑