diff --git a/examples/werewolf_game/actions/experience_operation.py b/examples/werewolf_game/actions/experience_operation.py
new file mode 100644
index 000000000..2ced3d0c8
--- /dev/null
+++ b/examples/werewolf_game/actions/experience_operation.py
@@ -0,0 +1,156 @@
+import json
+import os
+
+import chromadb
+from chromadb.utils import embedding_functions
+
+from metagpt.config import CONFIG
+from metagpt.actions import Action
+from metagpt.const import WORKSPACE_ROOT
+from metagpt.logs import logger
+from examples.werewolf_game.schema import RoleExperience
+
+DEFAULT_COLLECTION_NAME = "role_reflection" # FIXME: some hard code for now
+EMB_FN = embedding_functions.OpenAIEmbeddingFunction(
+    api_key=CONFIG.openai_api_key,
+    api_base=CONFIG.openai_api_base,
+    api_type=CONFIG.openai_api_type,
+    model_name="text-embedding-ada-002",
+    api_version="2",
+)
+
+class AddNewExperiences(Action):
+    def __init__(
+        self, name="AddNewExperience", context=None, llm=None,
+        collection_name=DEFAULT_COLLECTION_NAME, delete_existing=False,
+    ):
+        super().__init__(name, context, llm)
+        chroma_client = chromadb.PersistentClient(path=f"{WORKSPACE_ROOT}/werewolf_game/chroma")
+        if delete_existing:
+            try:
+                chroma_client.get_collection(name=collection_name)
+                chroma_client.delete_collection(name=collection_name)
+                logger.info(f"existing collection {collection_name} deleted")
+            except:
+                pass
+
+        # emb_fn = embedding_functions.SentenceTransformerEmbeddingFunction(model_name="multi-qa-mpnet-base-cos-v1")
+
+        self.collection = chroma_client.get_or_create_collection(
+            name=collection_name,
+            metadata={"hnsw:space": "cosine"},
+            embedding_function=EMB_FN,
+        )
+
+    def run(self, experiences: list[RoleExperience]):
+        if not experiences:
+            return
+        for i, exp in enumerate(experiences):
+            exp.id = f"{exp.profile}-{exp.name}-step{i}-round_{exp.round_id}"
+        ids = [exp.id for exp in experiences]
+        documents = [exp.reflection for exp in experiences]
+        metadatas = [exp.dict() for exp in experiences]
+
+        AddNewExperiences._record_experiences_local(experiences)
+
+        self.collection.add(
+            documents=documents,
+            metadatas=metadatas,
+            ids=ids
+        )
+
+    def add_from_file(self, file_path):
+        with open(file_path, "r") as fl:
+            lines = fl.readlines()
+        experiences = [RoleExperience(**json.loads(line)) for line in lines]
+
+        ids = [exp.id for exp in experiences]
+        documents = [exp.reflection for exp in experiences]
+        metadatas = [exp.dict() for exp in experiences]
+
+        self.collection.add(
+            documents=documents,
+            metadatas=metadatas,
+            ids=ids
+        )
+
+    @staticmethod
+    def _record_experiences_local(experiences: list[RoleExperience]):
+        round_id = experiences[0].round_id
+        experiences = [exp.json() for exp in experiences]
+        experience_folder = WORKSPACE_ROOT / 'werewolf_game/experiences'
+        if not os.path.exists(experience_folder):
+            os.makedirs(experience_folder)
+        save_path = f"{experience_folder}/{round_id}.json"
+        with open(save_path, "a") as fl:
+            fl.write("\n".join(experiences))
+        logger.info(f"experiences saved to {save_path}")
+
+class RetrieveExperiences(Action):
+
+    def __init__(
+        self, name="RetrieveExperiences", context=None, llm=None, collection_name=DEFAULT_COLLECTION_NAME):
+        super().__init__(name, context, llm)
+        chroma_client = chromadb.PersistentClient(path=f"{WORKSPACE_ROOT}/werewolf_game/chroma")
+        try:
+            self.collection = chroma_client.get_collection(
+                name=collection_name,
+                embedding_function=EMB_FN,
+            )
+            self.has_experiences = True
+        except:
+            logger.warning(f"No experience pool {collection_name}")
+            self.has_experiences = False
+    
+    def run(self, query: str, profile: str, topk: int = 5) -> str:
+        """_summary_
+
+        Args:
+            query (str): 用当前的reflection作为query去检索过去相似的reflection
+            profile (str): _description_
+            topk (int, optional): _description_. Defaults to 5.
+
+        Returns:
+            _type_: _description_
+        """
+        if not self.has_experiences:
+            return ""
+
+        results = self.collection.query(
+            query_texts=[query],
+            n_results=topk,
+            where={"profile": profile},
+        )
+        
+        logger.info("retrieved exp")
+        past_experiences = [RoleExperience(**res) for res in results["metadatas"][0]]
+        # print(*past_experiences, sep="\n\n")
+        distances = results["distances"][0]
+        print(distances)
+
+        template = """
+        {
+            "Situation __i__": "__situation__"
+            ,"Moderator's instruction": "__instruction__"
+            ,"Your action or speech during that time": "__response__"
+            ,"Reality": "In fact, it turned out the true roles are __game_step__",
+            ,"Outcome": "You __outcome__ in the end"
+        }
+        """
+        past_experiences = [
+            (template.replace("__i__", str(i)).replace("__situation__", exp.reflection)
+            .replace("__instruction__", exp.instruction).replace("__response__", exp.response)
+            .replace("__game_step__", exp.game_setup.replace("0 | Game setup:\n", "").replace("\n", " "))
+            .replace("__outcome__", exp.outcome))
+            for i, exp in enumerate(past_experiences)
+        ]
+        print(*past_experiences, sep="\n")
+
+        return json.dumps(past_experiences)
+
+def delete_collection(name):
+    chroma_client = chromadb.PersistentClient(path=f"{WORKSPACE_ROOT}/werewolf_game/chroma")
+    chroma_client.delete_collection(name=name)
+
+# if __name__ == "__main__":
+#     delete_collection(name="test")