diff --git a/pages/deepMate/deepMate.vue b/pages/deepMate/deepMate.vue
index c404bb1..a894035 100644
--- a/pages/deepMate/deepMate.vue
+++ b/pages/deepMate/deepMate.vue
@@ -232,6 +232,7 @@
       @touchmove="onBackTopTouchMove"
       @touchend="onBackTopTouchEnd"
       @click="onBackTopClick"
+      v-if="messages.length > 0"
     ></image>
 
     <!-- 搜索历史侧拉框 -->