diff --git a/backend/internal/api/auto_add.go b/backend/internal/api/auto_add.go
index db22907..b4a3f7c 100644
--- a/backend/internal/api/auto_add.go
+++ b/backend/internal/api/auto_add.go
@@ -185,7 +185,14 @@ func getS2AAccountCount() (int, error) {
 	if err != nil {
 		return 0, err
 	}
-	req.Header.Set("Authorization", "Bearer "+config.Global.S2AAdminKey)
+
+	// 设置认证头（与代理保持一致）
+	adminKey := config.Global.S2AAdminKey
+	req.Header.Set("Authorization", "Bearer "+adminKey)
+	req.Header.Set("X-API-Key", adminKey)
+	req.Header.Set("X-Admin-Key", adminKey)
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Accept", "application/json")
 
 	client := &http.Client{Timeout: 10 * time.Second}
 	resp, err := client.Do(req)