diff --git a/src/services/claudeRelayService.js b/src/services/claudeRelayService.js
index 7697a36d..af9c04dd 100644
--- a/src/services/claudeRelayService.js
+++ b/src/services/claudeRelayService.js
@@ -710,13 +710,13 @@ class ClaudeRelayService {
       }
 
       // 使用统一 User-Agent 或客户端提供的，最后使用默认值
-      if (!options.headers['User-Agent'] && !options.headers['user-agent']) {
-        const userAgent = unifiedUA || 'claude-cli/1.0.57 (external, cli)'
-        options.headers['User-Agent'] = userAgent
+      if (!options.headers['user-agent'] || unifiedUA !== null) {
+        const userAgent = unifiedUA || 'claude-cli/1.0.119 (external, cli)'
+        options.headers['user-agent'] = userAgent
       }
 
       logger.info(
-        `🔗 指纹是这个: ${options.headers['User-Agent'] || options.headers['user-agent']}`
+        `🔗 指纹是这个: ${options.headers['user-agent']}`
       )
 
       // 使用自定义的 betaHeader 或默认值
@@ -951,13 +951,13 @@ class ClaudeRelayService {
       }
 
       // 使用统一 User-Agent 或客户端提供的，最后使用默认值
-      if (!options.headers['User-Agent'] && !options.headers['user-agent']) {
-        const userAgent = unifiedUA || 'claude-cli/1.0.57 (external, cli)'
-        options.headers['User-Agent'] = userAgent
+      if (!options.headers['user-agent'] || unifiedUA !== null) {
+        const userAgent = unifiedUA || 'claude-cli/1.0.119 (external, cli)'
+        options.headers['user-agent'] = userAgent
       }
 
       logger.info(
-        `🔗 指纹是这个: ${options.headers['User-Agent'] || options.headers['user-agent']}`
+        `🔗 指纹是这个: ${options.headers['user-agent']}`
       )
       // 使用自定义的 betaHeader 或默认值
       const betaHeader =