diff --git a/metagpt/actions/talk_action.py b/metagpt/actions/talk_action.py
index 5485456c5..dab4873fb 100644
--- a/metagpt/actions/talk_action.py
+++ b/metagpt/actions/talk_action.py
@@ -4,18 +4,21 @@ from metagpt.logs import logger
 
 
 class TalkAction(Action):
-    def __init__(self, options, name: str = '', talk='', history_summary='', context=None, llm=None, **kwargs):
+    def __init__(self, options, name: str = '', talk='', history_summary='', knowledge='', context=None, llm=None, **kwargs):
         context = context or {}
         context["talk"] = talk
         context["history_summery"] = history_summary
+        context["knowledge"] = knowledge
         super(TalkAction, self).__init__(options=options, name=name, context=context, llm=llm)
         self._talk = talk
         self._history_summary = history_summary
+        self._knowledge = knowledge
         self._rsp = None
 
     @property
     def prompt(self):
-        prompt = f"{self._history_summary}\n\n"
+        prompt = f"{self._knowledge}\n\n"
+        prompt += f"{self._history_summary}\n\n"
         if self._history_summary != "":
             prompt += "According to the historical conversation above, "
         language = self.options.get("language", "Chinese")
diff --git a/metagpt/memory/brain_memory.py b/metagpt/memory/brain_memory.py
index 68e930144..422c096f3 100644
--- a/metagpt/memory/brain_memory.py
+++ b/metagpt/memory/brain_memory.py
@@ -17,6 +17,7 @@ class BrainMemory(pydantic.BaseModel):
     history: List[Message] = []
     stack: List[Message] = []
     solution: List[Message] = []
+    knowledge: List[Message] = []
 
 
     def add_talk(self, msg: Message):
@@ -27,6 +28,10 @@ class BrainMemory(pydantic.BaseModel):
         msg.add_tag(MessageType.Answer.value)
         self.history.append(msg)
 
+    def get_knowledge(self) -> str:
+        texts = [k.content for k in self.knowledge]
+        return "\n".join(texts)
+
     @property
     def history_text(self):
         if len(self.history) == 0:
diff --git a/metagpt/roles/assistant.py b/metagpt/roles/assistant.py
index e02005f31..c001d69f0 100644
--- a/metagpt/roles/assistant.py
+++ b/metagpt/roles/assistant.py
@@ -87,7 +87,8 @@ class Assistant(Role):
         return await handler(text, **kwargs)
 
     async def talk_handler(self, text, **kwargs) -> bool:
-        action = TalkAction(options=self.options, talk=text, llm=self._llm, **kwargs)
+        action = TalkAction(options=self.options, talk=text, knowledge=self.memory.get_knowledge(), llm=self._llm,
+                            **kwargs)
         self.add_to_do(action)
         return True
 
@@ -136,7 +137,7 @@ class Assistant(Role):
 async def main():
     options = Config().runtime_options
     cost_manager = CostManager(**options)
-    topic = "draw an apple"
+    topic = "what's apple"
     role = Assistant(options=options, cost_manager=cost_manager, language="Chinese")
     await role.talk(topic)
     while True: