diff --git a/plugins/message_summary/main.py b/plugins/message_summary/main.py
index 831b9b0..171644a 100644
--- a/plugins/message_summary/main.py
+++ b/plugins/message_summary/main.py
@@ -1,7 +1,9 @@
 import asyncio
 import json
+import os
 import re
 import threading
+import time
 from pathlib import Path
 from typing import Dict, Any, Tuple, Optional, List
 
@@ -216,9 +218,27 @@ class MessageSummaryPlugin(MessagePluginInterface):
                 tokens_info = f"\n\n【tokens】输入: {prompt_tokens} 生成: {completion_tokens} 总: {total_tokens}"
                 answer += tokens_info
                 try:
-                    spath = await convert_md_str_to_image(answer, "output.png")
+                    # 使用唯一文件名并指定完整路径
+                    timestamp = int(time.time())
+                    output_filename = f"summary_{group_id}_{timestamp}.png"
+                    output_dir = Path(os.path.dirname(os.path.abspath(__file__)), "outputs")
+                    
+                    # 确保输出目录存在
+                    os.makedirs(output_dir, exist_ok=True)
+                    
+                    # 构建完整的输出路径
+                    output_path = os.path.join(output_dir, output_filename)
+                    
+                    # 检查磁盘空间
+                    if self._check_disk_space(output_dir):
+                        spath = await convert_md_str_to_image(answer, output_path)
+                        self.LOG.info(f"成功生成图片: {spath}")
+                    else:
+                        self.LOG.error("磁盘空间不足，无法生成图片")
+                        spath = None
                 except Exception as e:
-                    self.LOG.error(f"生成image失败:{e}")
+                    self.LOG.error(f"生成image失败:{e}", exc_info=True)
+                    spath = None
             # 返回文本内容和图片路径
             return answer, spath
 
@@ -233,3 +253,22 @@ class MessageSummaryPlugin(MessagePluginInterface):
         except Exception as e:
             self.LOG.error(f"处理总结时出现未知错误: {e}")
             return f"生成总结时出现未知错误: {str(e)}", None
+
+    def _check_disk_space(self, path, min_space_mb=100):
+        """
+        检查指定路径的可用磁盘空间
+        :param path: 要检查的路径
+        :param min_space_mb: 最小所需空间（MB）
+        :return: 如果有足够空间则返回True，否则返回False
+        """
+        try:
+            import shutil
+            # 获取路径所在磁盘的可用空间（字节）
+            free_space = shutil.disk_usage(path).free
+            # 转换为MB
+            free_space_mb = free_space / (1024 * 1024)
+            return free_space_mb >= min_space_mb
+        except Exception as e:
+            self.LOG.error(f"检查磁盘空间时出错: {e}")
+            # 出错时假设空间足够
+            return True