diff --git a/proxy/rewriter.go b/proxy/rewriter.go
index 466ce3b..765cb31 100644
--- a/proxy/rewriter.go
+++ b/proxy/rewriter.go
@@ -125,6 +125,11 @@ func (r *ContentRewriter) rewriteURL(urlStr string) string {
         return urlStr
     }
     
+    // 已经是代理 URL，直接返回
+    if strings.HasPrefix(urlStr, "/p/"+r.token+"/") {
+        return urlStr
+    }
+    
     // 处理协议相对 URL（//domain.com/path）
     if strings.HasPrefix(urlStr, "//") {
         urlStr = r.baseURL.Scheme + ":" + urlStr
@@ -152,10 +157,10 @@ func (r *ContentRewriter) rewriteURL(urlStr string) string {
     }
     
     // 跨域资源，完整 URL
-    return "/p/" + r.token + "/" + u.String()
+    fullURL := u.String()
+    return "/p/" + r.token + "/" + fullURL
 }
 
-
 func (r *ContentRewriter) rewriteSrcset(srcset string) string {
     if srcset == "" {
         return srcset