diff --git a/scripts/utils/__init__.py b/scripts/utils/__init__.py
index 64cd1bb..f91d27f 100644
--- a/scripts/utils/__init__.py
+++ b/scripts/utils/__init__.py
@@ -10,7 +10,6 @@ from .file_detection import (
     is_valid_ppt,
     is_html_file,
     is_url,
-    detect_file_type,
 )
 
 __all__ = [
@@ -23,5 +22,4 @@ __all__ = [
     "is_valid_ppt",
     "is_html_file",
     "is_url",
-    "detect_file_type",
 ]
diff --git a/scripts/utils/file_detection.py b/scripts/utils/file_detection.py
index 2bcffb4..5d81068 100644
--- a/scripts/utils/file_detection.py
+++ b/scripts/utils/file_detection.py
@@ -84,23 +84,5 @@ def is_url(input_str: str) -> bool:
     return input_str.startswith("http://") or input_str.startswith("https://")
 
 
-_FILE_TYPE_VALIDATORS = {
-    ".docx": is_valid_docx,
-    ".pptx": is_valid_pptx,
-    ".xlsx": is_valid_xlsx,
-    ".pdf": is_valid_pdf,
-    ".doc": is_valid_doc,
-    ".xls": is_valid_xls,
-    ".ppt": is_valid_ppt,
-}
-
-
-def detect_file_type(file_path: str) -> Optional[str]:
-    """检测文件类型，返回 'docx'、'pptx'、'xlsx'、'pdf'、'doc'、'xls' 或 'ppt'"""
-    ext = os.path.splitext(file_path)[1].lower()
-    validator = _FILE_TYPE_VALIDATORS.get(ext)
-    if validator and validator(file_path):
-        return ext.lstrip(".")
-    return None