diff --git a/services/service_tuhui_upload.py b/services/service_tuhui_upload.py
index 475088f..76d52c1 100644
--- a/services/service_tuhui_upload.py
+++ b/services/service_tuhui_upload.py
@@ -10,6 +10,7 @@ import mimetypes
 from dataclasses import dataclass
 from pathlib import Path
 from typing import Iterator, Optional
+from urllib.parse import urlparse
 from dotenv import load_dotenv
 
 logger = logging.getLogger(__name__)
@@ -89,6 +90,36 @@ class TuhuiUploadService:
     def _build_work_url(work_id: int) -> str:
         return f"{TUHUI_WEB_BASE_URL}/detail/{int(work_id)}"
 
+    @staticmethod
+    def _normalize_asset_url(raw_url: str) -> str:
+        url = str(raw_url or "").strip()
+        if not url:
+            return ""
+        if url.startswith("/"):
+            return f"{TUHUI_WEB_BASE_URL}{url}"
+
+        parsed = urlparse(url)
+        if not parsed.scheme or not parsed.netloc:
+            return url
+
+        host = (parsed.netloc or "").lower()
+        if host in {
+            "tuhui.cloud",
+            "www.tuhui.cloud",
+            "aidg168.uk",
+            "www.aidg168.uk",
+            "156.226.181.204:8002",
+            "1.12.50.92:8002",
+            "127.0.0.1:8002",
+        }:
+            path = parsed.path or ""
+            if parsed.query:
+                path = f"{path}?{parsed.query}"
+            if parsed.fragment:
+                path = f"{path}#{parsed.fragment}"
+            return f"{TUHUI_WEB_BASE_URL}{path}"
+        return url
+
     @staticmethod
     def _guess_file_meta(image_path: str) -> tuple[str, str]:
         path = Path(image_path)
@@ -214,11 +245,13 @@ class TuhuiUploadService:
                             )
 
                         work_id = int(payload.get("work_id") or payload.get("work", {}).get("id") or 0)
-                        image_url = str(payload.get("image_url") or payload.get("work", {}).get("original_image") or "")
-                        thumbnail_url = str(
+                        image_url = self._normalize_asset_url(
+                            payload.get("image_url") or payload.get("work", {}).get("original_image") or ""
+                        )
+                        thumbnail_url = self._normalize_asset_url(
                             payload.get("thumbnail_url") or payload.get("work", {}).get("thumbnail_image") or ""
                         )
-                        watermarked_url = str(
+                        watermarked_url = self._normalize_asset_url(
                             payload.get("watermarked_url") or payload.get("work", {}).get("watermarked_image") or ""
                         )
                         download_url = self._build_work_url(work_id) if work_id else ""