Abstract: Load management can reduce the peak valley difference of power system load, so as to improve the operation of power grid and improve the utilization rate of energy. However, with the coverage expansion of new power load management system and the access of massive terminal equipments, the existing load management communication network has brought many network's security risks, such as authentication difficulties, data leakage, virus invasion and so on. Firstly, this paper analyzes the security risks and security protection requirements faced by the communication of new power load management system; Secondly, combined with the characteristics and security risks of new power load management communication system, the communication security protection technology architecture is constructed; Finally, the application deployment scheme of communication security protection of new power load management system is designed from the terminal side, access side, communication side and platform side.