Abstract: Alarm sheet is for alarm information,which can guide the operator to make correct judgment and response.It’s an important basis for the operator to respond to the alarm when they are in the Main Control Room（MCR）.The power plant needs to update the content of the alarm sheet due to the design change and display optimization.In order to improve the efficiency and accuracy of the alarm sheets update,the maintenance personnel independently developed a set of tool software which can realize the automatic conversion of alarm sheet and can realize the automatic conversion between the editable alarm procedure document and the DCS system alarm sheet data file.This paper analyzes the analysis process of editable version alarm procedure document,the ideas and methods of data extraction.The format of the data file of the DCS system alarm sheet is also be studied,as well as the principle of automatic generation,etc.After testing and verification,it is proved that the data file generated by the KIC system alarm sheet conversion tool meets the requirement for stable operation of the KIC system.