diff --git a/lib/ai/aiCaller.js b/lib/ai/aiCaller.js
index 801c8ef..d982df8 100644
--- a/lib/ai/aiCaller.js
+++ b/lib/ai/aiCaller.js
@@ -50,7 +50,7 @@ class AiCaller {
     
     try {
       const userId = e.user_id;
-      const userConfig = await UserConfigManager.getUserConfig(userId);
+      const userConfig = await UserConfigManager.getUserConfig(String(userId));
       logger.info(`[crystelf-ai] 用户 ${userId} 使用配置 - 智能多模态: ${userConfig.smartMultimodal}, 多模态启用: ${userConfig.multimodalEnabled}`);
       
       if (userConfig.smartMultimodal && userConfig.multimodalEnabled) {