diff --git a/write-server/src/lib/rssapi.ts b/write-server/src/lib/rssapi.ts
index 86cafded..2ef9bc41 100644
--- a/write-server/src/lib/rssapi.ts
+++ b/write-server/src/lib/rssapi.ts
@@ -128,7 +128,9 @@ export async function addLink(link: { name: string; url: string; description?: s
 
 export async function updateLink(oldUrl: string, data: { name?: string; url?: string; description?: string; hidden?: boolean }): Promise<void> {
   const qs = withToken();
-  const body: Record<string, unknown> = { ...data };
+  // 确保 body 中始终包含 url（API 必填字段）
+  const body: Record<string, unknown> = { url: oldUrl, ...data };
+  // 如果提供了新 url 且与旧 url 不同，添加 oldUrl 字段
   if (data.url && data.url !== oldUrl) body.oldUrl = oldUrl;
   await rssFetch(`/api/links?${qs}`, {
     method: "POST",