diff --git a/lib/server-config.ts b/lib/server-config.ts
index 01767ee..9463fb4 100644
--- a/lib/server-config.ts
+++ b/lib/server-config.ts
@@ -10,7 +10,14 @@
  */
 const localPost = async <T>(url: string, data: any): Promise<T> => {
   try {
-    const response = await fetch(url, {
+    // 使用环境变量中的 BASE_URL（生产要求使用 NEXT_PUBLIC_BASE_URL）
+    const baseUrl = process.env.NEXT_PUBLIC_BASE_URL || '';
+    const isAbsolute = /^https?:\/\//i.test(url);
+    const normalizedBase = baseUrl.replace(/\/$/, '');
+    const normalizedPath = url.startsWith('/') ? url : `/${url}`;
+    const fullUrl = isAbsolute ? url : `${normalizedBase}${normalizedPath}`;
+
+    const response = await fetch(fullUrl, {
       method: 'POST',
       headers: {
         'Content-Type': 'application/json',