diff --git a/proxy/rewriter.go b/proxy/rewriter.go
index 506cdc6..466ce3b 100644
--- a/proxy/rewriter.go
+++ b/proxy/rewriter.go
@@ -125,6 +125,11 @@ func (r *ContentRewriter) rewriteURL(urlStr string) string {
         return urlStr
     }
     
+    // 处理协议相对 URL（//domain.com/path）
+    if strings.HasPrefix(urlStr, "//") {
+        urlStr = r.baseURL.Scheme + ":" + urlStr
+    }
+    
     u, err := url.Parse(urlStr)
     if err != nil {
         return urlStr
@@ -134,7 +139,7 @@ func (r *ContentRewriter) rewriteURL(urlStr string) string {
         u = r.baseURL.ResolveReference(u)
     }
     
-    // 如果是同域名，只保留路径
+    // 同域名，只保留路径
     if u.Host == r.baseURL.Host {
         proxyPath := u.Path
         if u.RawQuery != "" {
@@ -146,10 +151,11 @@ func (r *ContentRewriter) rewriteURL(urlStr string) string {
         return "/p/" + r.token + proxyPath
     }
     
-    // 跨域资源，需要完整 URL
+    // 跨域资源，完整 URL
     return "/p/" + r.token + "/" + u.String()
 }
 
+
 func (r *ContentRewriter) rewriteSrcset(srcset string) string {
     if srcset == "" {
         return srcset