diff --git a/src/modules/rag-chat/rag-chat.service.ts b/src/modules/rag-chat/rag-chat.service.ts
index dddb8d9..7adf096 100644
--- a/src/modules/rag-chat/rag-chat.service.ts
+++ b/src/modules/rag-chat/rag-chat.service.ts
@@ -76,7 +76,7 @@ export class RagChatService {
           messages,
           maxTokens: 2048,
         });
-        this.logger.log(`AI Gateway response: parsed=${!!resp.parsed}`);
+        this.logger.log(`AI Gateway response: parsed=${!!resp.parsed}, keys=${resp.parsed ? Object.keys(resp.parsed).join(',') : 'null'}, raw=${JSON.stringify(resp.parsed).substring(0, 300)}`);
         reply = resp.parsed?.answer ?? String(resp.parsed?.content ?? '抱歉，AI 暂时无法生成回答。');
         citations = context.citations;
       } catch (err: any) {