diff --git a/src/api/toolchain_routes.py b/src/api/toolchain_routes.py
index cb443ee..1c2795c 100644
--- a/src/api/toolchain_routes.py
+++ b/src/api/toolchain_routes.py
@@ -66,10 +66,14 @@ def _is_duplicate(event: str, delivery: str, payload: Optional[Dict[str, Any]] =
         return True
 
     # 检查 payload 内容去重（review 事件：同一 PR + 同一用户 + 同一内容）
+    # 注意：Gitea webhookNotifier 用 review.body，actionsNotifier 用 review.content
+    # 所以去重 key 需要同时取两个字段，确保两种格式生成相同 key
     if payload and "review" in event:
         pr_num = payload.get("pull_request", {}).get("number")
         sender = payload.get("sender", {}).get("login")
-        content = payload.get("review", {}).get("content", "")
+        review = payload.get("review", {})
+        # 取 body 或 content，优先 body（webhookNotifier 格式）
+        content = review.get("body", "") or review.get("content", "")
         content_key = f"content:{event}:{pr_num}:{sender}:{content}"
         if content_key in _delivery_cache:
             logger.info("Content-based duplicate detected: %s PR#%s by %s", event, pr_num, sender)