diff --git a/src/services/claudeRelayService.js b/src/services/claudeRelayService.js
index 71e567e1..8d8909b8 100644
--- a/src/services/claudeRelayService.js
+++ b/src/services/claudeRelayService.js
@@ -142,8 +142,7 @@ class ClaudeRelayService {
       // 获取有效的访问token
       const accessToken = await claudeAccountService.getValidAccessToken(accountId)
 
-      // 处理请求体（传递 clientHeaders 以判断是否需要设置 Claude Code 系统提示词）
-      const processedBody = this._processRequestBody(requestBody, clientHeaders, account)
+      const processedBody = this._processRequestBody(requestBody, account)
 
       // 获取代理配置
       const proxyAgent = await this._getProxyAgent(accountId)
@@ -435,7 +434,7 @@ class ClaudeRelayService {
   }
 
   // 🔄 处理请求体
-  _processRequestBody(body, clientHeaders = {}, account = null) {
+  _processRequestBody(body, account = null) {
     if (!body) {
       return body
     }
@@ -998,8 +997,7 @@ class ClaudeRelayService {
       // 获取有效的访问token
       const accessToken = await claudeAccountService.getValidAccessToken(accountId)
 
-      // 处理请求体（传递 clientHeaders 以判断是否需要设置 Claude Code 系统提示词）
-      const processedBody = this._processRequestBody(requestBody, clientHeaders, account)
+      const processedBody = this._processRequestBody(requestBody, account)
 
       // 获取代理配置
       const proxyAgent = await this._getProxyAgent(accountId)