diff --git a/src/chat/emoji_system/emoji_manager.py b/src/chat/emoji_system/emoji_manager.py
index 00f93421a..10669b140 100644
--- a/src/chat/emoji_system/emoji_manager.py
+++ b/src/chat/emoji_system/emoji_manager.py
@@ -723,7 +723,7 @@ class EmojiManager:
             emoji = await self.get_emoji_from_manager(emoji_hash)
             if emoji and emoji.emotion:
                 logger.info(f"[缓存命中] 从内存获取表情包描述: {emoji.emotion}...")
-                return emoji.emotion
+                return ",".join(emoji.emotion)
 
             # 如果内存中没有，从数据库查找
             self._ensure_db()
diff --git a/src/chat/utils/utils_image.py b/src/chat/utils/utils_image.py
index 58df290d4..7aaa207bf 100644
--- a/src/chat/utils/utils_image.py
+++ b/src/chat/utils/utils_image.py
@@ -101,6 +101,8 @@ class ImageManager:
         image_bytes = base64.b64decode(image_base64)
         image_hash = hashlib.md5(image_bytes).hexdigest()
         emoji = await emoji_manager.get_emoji_from_manager(image_hash)
+        if not emoji:
+            return "[表情包：未知]"
         emotion_list = emoji.emotion
         tag_str = ",".join(emotion_list)
         return f"[表情包：{tag_str}]"