diff --git a/src/tg_bot.py b/src/tg_bot.py
index c8a124a..a9847d1 100644
--- a/src/tg_bot.py
+++ b/src/tg_bot.py
@@ -310,16 +310,18 @@ def _do_regen(bot_token: str, cfg: Config, chat_id: int, msg_id: int, ctx: dict,
         _show_ai_suggestions(bot_token, chat_id, msg_id, new_suggestions, comparison)
 
 
-def _do_ai_hint(bot_token: str, cfg: Config, chat_id: int, conv: dict, ctx: dict, hint: str):
-    """在 AI 线程池中根据用户提示生成回复"""
+def _do_ai_hint(bot_token: str, cfg: Config, chat_id: int, conv: dict, ctx: dict, hint_history: list[str]):
+    """在 AI 线程池中根据用户提示生成回复（支持多轮追问）"""
     user = find_user_by_chat_id(cfg, chat_id)
     if not user:
         return
     style = conv.get("reply_style", "short")
+    # 拼接历史提示作为上下文
+    combined_hint = " → ".join(hint_history)
     try:
         result = generate_more_replies(
             user.ai, ctx["sender"], ctx["subject"], ctx["original_body"],
-            conv.get("all_suggestions", []), user_hint=hint, style=style,
+            conv.get("all_suggestions", []), user_hint=combined_hint, style=style,
         )
         new_suggestions = result["suggestions"]
         comparison = result.get("comparison", "")
@@ -332,9 +334,10 @@ def _do_ai_hint(bot_token: str, cfg: Config, chat_id: int, conv: dict, ctx: dict
         conv["all_suggestions"].extend(new_suggestions)
         conv["comparison"] = comparison
         conv["state"] = "ai_reply_selection"
+        conv["hint_history"] = hint_history
         conv.pop("prompt_msg_id", None)
         save_conversation(chat_id, conv)
-        logger.info("[ai_hint] 根据提示生成 %d 条新回复", len(new_suggestions))
+        logger.info("[ai_hint] 根据提示生成 %d 条新回复 (历史 %d 条)", len(new_suggestions), len(hint_history))
         _show_ai_suggestions(bot_token, chat_id, conv["summary_msg_id"], new_suggestions, comparison)
 
 
@@ -499,8 +502,10 @@ def _handle_callback(bot_token: str, cfg: Config, cb: dict):
         if conv and conv.get("summary_msg_id") == msg_id:
             conv["state"] = "awaiting_ai_hint"
             conv["prompt_msg_id"] = prompt_msg_id
+            if "hint_history" not in conv:
+                conv["hint_history"] = []
             save_conversation(chat_id, conv)
-            logger.info("  等待用户输入 AI 提示")
+            logger.info("  等待用户输入 AI 提示 (历史 %d 条)", len(conv["hint_history"]))
 
     elif action == CALLBACK_CANCEL:
         conv = load_conversation(chat_id)
@@ -616,13 +621,17 @@ def _handle_message(bot_token: str, cfg: Config, msg: dict):
         if prompt_msg_id:
             delete_message(bot_token, chat_id_str, prompt_msg_id)
 
+        # 追加到 hint 历史
+        hint_history = conv.get("hint_history", [])
+        hint_history.append(text)
+
         # 更新消息为 AI 思考中
         _tg_req(bot_token, "editMessageText", {
             "chat_id": chat_id, "message_id": conv["summary_msg_id"],
             "text": "🤖 *AI思考中…*", "parse_mode": "MarkdownV2",
         })
-        # 丢到 AI 线程池处理
-        _ai_pool.submit(_do_ai_hint, bot_token, cfg, chat_id, conv, ctx, text)
+        # 丢到 AI 线程池处理，传入完整 hint 历史
+        _ai_pool.submit(_do_ai_hint, bot_token, cfg, chat_id, conv, ctx, hint_history)
 
 
 def _show_ai_suggestions(bot_token: str, chat_id: int, msg_id: int,