diff --git a/src/tools/tool_executor.py b/src/tools/tool_executor.py
index b7b0d8f69..3bec3d152 100644
--- a/src/tools/tool_executor.py
+++ b/src/tools/tool_executor.py
@@ -187,7 +187,11 @@ class ToolExecutor:
                     tool_results.append(tool_info)
 
                     logger.info(f"{self.log_prefix}工具{tool_name}执行成功，类型: {tool_info['type']}")
-                    logger.debug(f"{self.log_prefix}工具{tool_name}结果内容: {tool_info['content'][:200]}...")
+                    content = tool_info['content']
+                    if not isinstance(content, (str, list, tuple)):
+                        content = str(content)
+                    preview = content[:200]
+                    logger.debug(f"{self.log_prefix}工具{tool_name}结果内容: {preview}...")
 
             except Exception as e:
                 logger.error(f"{self.log_prefix}工具{tool_name}执行失败: {e}")