diff --git a/src/plugins/group_nickname/nickname_mapper.py b/src/plugins/group_nickname/nickname_mapper.py
index 0723f8ee..1d834294 100644
--- a/src/plugins/group_nickname/nickname_mapper.py
+++ b/src/plugins/group_nickname/nickname_mapper.py
@@ -102,11 +102,12 @@ async def analyze_chat_for_nicknames(
 
         # 清理可能的 Markdown 代码块标记
         response_content = response_content.strip()
-        if response_content.startswith("```json"):
-            response_content = response_content[7:]
-        if response_content.endswith("```"):
-            response_content = response_content[:-3]
-        response_content = response_content.strip()
+        # 使用正则表达式处理各种 Markdown 代码块情况
+        import re
+        markdown_code_regex = re.compile(r"^```(?:\w+)?\s*\n(.*?)\n\s*```$", re.DOTALL)
+        match = markdown_code_regex.match(response_content)
+        if match:
+            response_content = match.group(1).strip()
 
         try:
             result = json.loads(response_content)