diff --git a/README.md b/README.md
index 511b74e..1a358d8 100644
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@@ -2,6 +2,8 @@
 
 Using the python package [xlrd](https://github.com/python-excel/xlrd) and [xlwt](https://github.com/python-excel/xlwt) to unmerge the excel file, and then auto fill the merged cells by the first cell in the merged cells.
 
+For general purpose, unMergeExcelCell.py won't keep the style and format from the origin excel file.
+
 ## Usage
 ``` 
     Un-merge excel cell and auto fill with the first cell value in the merged cells