diff --git a/astrbot/builtin_stars/astrbot/long_term_memory.py b/astrbot/builtin_stars/astrbot/long_term_memory.py
index e08cdc5157..49c8ccb43d 100644
--- a/astrbot/builtin_stars/astrbot/long_term_memory.py
+++ b/astrbot/builtin_stars/astrbot/long_term_memory.py
@@ -156,7 +156,8 @@ async def on_req_llm(self, event: AstrMessageEvent, req: ProviderRequest) -> Non
         chats_str = "\n---\n".join(self.session_chats[event.unified_msg_origin])
 
         cfg = self.cfg(event)
-        if cfg["enable_active_reply"]:
+        is_active_reply = getattr(req, "_ltm_active_reply_trigger", False)
+        if cfg["enable_active_reply"] and is_active_reply:
             prompt = req.prompt
             req.prompt = (
                 f"You are now in a chatroom. The chat history is as follows:\n{chats_str}"
@@ -164,7 +165,7 @@ async def on_req_llm(self, event: AstrMessageEvent, req: ProviderRequest) -> Non
                 "Please react to it. Only output your response and do not output any other information. "
                 "You MUST use the SAME language as the chatroom is using."
             )
-            req.contexts = []  # 清空上下文，当使用了主动回复，所有聊天记录都在一个prompt中。
+            req.contexts = []  # Only clear contexts for proactive replies; chat history is embedded in the prompt.
         else:
             req.system_prompt += (
                 "You are now in a chatroom. The chat history is as follows: \n"
diff --git a/astrbot/builtin_stars/astrbot/main.py b/astrbot/builtin_stars/astrbot/main.py
index b4ba48264e..a0526d85db 100644
--- a/astrbot/builtin_stars/astrbot/main.py
+++ b/astrbot/builtin_stars/astrbot/main.py
@@ -75,11 +75,13 @@ async def on_message(self, event: AstrMessageEvent):
                         logger.error("未找到对话，无法主动回复")
                         return
 
-                    yield event.request_llm(
+                    req = event.request_llm(
                         prompt=prompt,
                         session_id=event.session_id,
-                        conversation=conv,
+                        conversation=None,  # Proactive replies should not overwrite conversation history with chatroom context.
                     )
+                    setattr(req, "_ltm_active_reply_trigger", True)
+                    yield req
                 except BaseException as e:
                     logger.error(traceback.format_exc())
                     logger.error(f"主动回复失败: {e}")