diff --git a/lib/ai/aiCaller.js b/lib/ai/aiCaller.js
index 7ff5812..801c8ef 100644
--- a/lib/ai/aiCaller.js
+++ b/lib/ai/aiCaller.js
@@ -263,12 +263,14 @@ class AiCaller {
    * @param {Object} config - 用户配置
    * @returns {OpenaiChat} OpenAI实例
    */
-  async getUserOpenaiInstance(userId, config) {
+  async getUserOpenaiInstance(userId, config) { 
     if (config.apiKey === this.config.apiKey && config.baseApi === this.config.baseApi) {
+      logger.info(`[crystelf-ai] 用户 ${userId} 使用全局OpenAI实例`);
       return this.openaiChat;
     }
     const cacheKey = `${userId}_${config.apiKey}_${config.baseApi}`;
     if (this.userOpenaiInstances.has(cacheKey)) {
+      logger.info(`[crystelf-ai] 用户 ${userId} 使用缓存的OpenAI实例`);
       return this.userOpenaiInstances.get(cacheKey);
     }
     const userOpenaiChat = new OpenaiChat();
diff --git a/lib/ai/userConfigManager.js b/lib/ai/userConfigManager.js
index a773059..dd5090d 100644
--- a/lib/ai/userConfigManager.js
+++ b/lib/ai/userConfigManager.js
@@ -8,7 +8,7 @@ import ConfigControl from '../config/configControl.js';
  */
 class UserConfigManager {
   constructor() {
-    this.basePath = path.join(process.cwd(), 'data', 'crystelf', 'ai');
+    this.basePath = path.join(process.cwd(), 'data', 'crystelf');
     this.userConfigs = new Map();
     this.globalConfig = null;
   }
@@ -30,20 +30,25 @@ class UserConfigManager {
   async getUserConfig(userId) {
     try {
       if (this.userConfigs.has(userId)) {
-        return this.userConfigs.get(userId);
+        const cachedConfig = this.userConfigs.get(userId);
+        logger.info(`[crystelf-ai] 使用缓存的用户配置 ${userId}: apiKey=${!!cachedConfig.apiKey}, model=${cachedConfig.modelType}`);
+        return cachedConfig;
       }
 
-      const userConfigPath = path.join(this.basePath, `${userId}.json`);
+      const userConfigPath = path.join(this.basePath, 'ai', userId, 'ai.json');
+      logger.info(`[crystelf-ai] 尝试加载用户配置: ${userConfigPath}`);
       let userConfig = {};
 
       try {
         const configData = await fs.readFile(userConfigPath, 'utf-8');
         userConfig = JSON.parse(configData);
       } catch (error) {
-        if (error.code !== 'ENOENT') {
+        if (error.code === 'ENOENT') {
+        } else {
           logger.warn(`[crystelf-ai] 用户 ${userId} 的配置文件解析失败，使用默认配置: ${error.message}`);
         }
       }
+      
       const mergedConfig = this.mergeConfigs(this.globalConfig, userConfig);
       this.userConfigs.set(userId, mergedConfig);
       
@@ -61,12 +66,16 @@ class UserConfigManager {
    */
   async saveUserConfig(userId, config) {
     try {
-      const userConfigPath = path.join(this.basePath, `${userId}.json`);
+      const userConfigDir = path.join(this.basePath, 'ai', userId);
+      const userConfigPath = path.join(userConfigDir, 'ai.json');
       const filteredConfig = this.filterUserConfig(config);
       
+      await fs.mkdir(userConfigDir, { recursive: true });
       await fs.writeFile(userConfigPath, JSON.stringify(filteredConfig, null, 2));
+      
       const mergedConfig = this.mergeConfigs(this.globalConfig, filteredConfig);
       this.userConfigs.set(userId, mergedConfig);
+      
     } catch (error) {
       logger.error(`[crystelf-ai] 保存用户 ${userId} 配置失败: ${error.message}`);
       throw error;
@@ -158,7 +167,7 @@ class UserConfigManager {
    */
   async hasUserConfig(userId) {
     try {
-      const userConfigPath = path.join(this.basePath, `${userId}.json`);
+      const userConfigPath = path.join(this.basePath, 'ai', userId, 'ai.json');
       await fs.access(userConfigPath);
       return true;
     } catch {