diff --git a/server/chat/knowledge_base_chat.py b/server/chat/knowledge_base_chat.py
index 0a85df3..8998f0d 100644
--- a/server/chat/knowledge_base_chat.py
+++ b/server/chat/knowledge_base_chat.py
@@ -10,7 +10,7 @@ from langchain.callbacks import AsyncIteratorCallbackHandler
 from typing import AsyncIterable
 import asyncio
 from langchain.prompts import PromptTemplate
-from server.knowledge_base.knowledge_base_factory import KBServiceFactory
+from server.knowledge_base.utils import KBServiceFactory
 from server.knowledge_base.kb_service.base import KBService
 import json
 
diff --git a/server/db/repository/knowledge_file_repository.py b/server/db/repository/knowledge_file_repository.py
index ba6eb04..cc7a284 100644
--- a/server/db/repository/knowledge_file_repository.py
+++ b/server/db/repository/knowledge_file_repository.py
@@ -1,7 +1,7 @@
 from server.db.models.knowledge_base_model import KnowledgeBaseModel
 from server.db.models.knowledge_file_model import KnowledgeFileModel
 from server.db.session import with_session
-from server.knowledge_base.knowledge_file import KnowledgeFile
+from server.knowledge_base.utils import KnowledgeFile
 
 
 @with_session
diff --git a/server/knowledge_base/knowledge_file.py b/server/knowledge_base/knowledge_file.py
deleted file mode 100644
index a342d7d..0000000
--- a/server/knowledge_base/knowledge_file.py
+++ /dev/null
@@ -1,45 +0,0 @@
-import os.path
-from server.knowledge_base.utils import (get_file_path)
-import sys
-
-
-LOADER_DICT = {"UnstructuredFileLoader": ['.eml', '.html', '.json', '.md', '.msg', '.rst',
-                                          '.rtf', '.txt', '.xml',
-                                          '.doc', '.docx', '.epub', '.odt', '.pdf',
-                                          '.ppt', '.pptx', '.tsv'],  # '.pdf', '.xlsx', '.csv'
-               "CSVLoader": [".csv"],
-               }
-SUPPORTED_EXTS = [ext for sublist in LOADER_DICT.values() for ext in sublist]
-
-def get_LoaderClass(file_extension):
-    for LoaderClass, extensions in LOADER_DICT.items():
-        if file_extension in extensions:
-            return LoaderClass
-
-
-class KnowledgeFile:
-    def __init__(
-            self,
-            filename: str,
-            knowledge_base_name: str
-    ):
-        self.kb_name = knowledge_base_name
-        self.filename = filename
-        self.ext = os.path.splitext(filename)[-1]
-        if self.ext not in SUPPORTED_EXTS:
-            raise ValueError(f"暂未支持的文件格式 {self.ext}")
-        self.filepath = get_file_path(knowledge_base_name, filename)
-        self.docs = None
-        self.document_loader_name = get_LoaderClass(self.ext)
-
-        # TODO: 增加依据文件格式匹配text_splitter
-        self.text_splitter_name = "CharacterTextSplitter"
-
-    def file2text(self):
-        DocumentLoader = getattr(sys.modules['langchain.document_loaders'], self.document_loader_name)
-        loader = DocumentLoader(self.filepath)
-
-        # TODO: 增加依据文件格式匹配text_splitter
-        TextSplitter = getattr(sys.modules['langchain.text_splitter'], self.text_splitter_name)
-        text_splitter = TextSplitter(chunk_size=500, chunk_overlap=200)
-        return loader.load_and_split(text_splitter)