diff --git a/dbgpt/app/scene/chat_data/chat_excel/excel_reader.py b/dbgpt/app/scene/chat_data/chat_excel/excel_reader.py
index 909007e2e..ee08c06f9 100644
--- a/dbgpt/app/scene/chat_data/chat_excel/excel_reader.py
+++ b/dbgpt/app/scene/chat_data/chat_excel/excel_reader.py
@@ -224,7 +224,7 @@ def process_function(function):
 
 def is_chinese(text):
     for char in text:
-        if "一" <= char <= "鿿":
+        if "\u4e00" <= char <= "\u9fa5":  # BMP中的常用汉字范围
             return True
     return False