Abstract:With the construction of information system and the application of a large number of new technologies,the information safety,especially the equipment,network and data security face severe challenges. In this case,how to ensure the security of system operation by some kinds of effective methods needs to be considered. Starting from the daily practical operation and based on security requirements,the technology and management are considered as an organic whole. Then the key elements in each aspect are analyzed,and the information security system for electric power industry is constructed. It has been proved that the system can effectively improves the ability of information and data security.