Abstract: With the rapid development of digital and intelligent new power system, the traditional operation and maintenance methods are difficult to meet the requirements of the power grid security operation. Advancements in new technologies such as intelligent robots and remote control that provide new ideas for reducing the burden of base staff in electrical enterprises. The intelligent patrolling and operating robots are becoming widespread in the maintaining of power grid equipment due to their flexibility, diversity, high efficiency and other characteristics. In particular, as the core component of the robot, the joint motor’s performance is an essential guarantee for the accurate monitoring of the grid equipment status and the safe operation of the power system. Therefore, a high-performance intelligent patrolling and operating robot joint motor is designed which contributes to the construction and development of the smart electric grid. Finally, a multi-objective optimization algorithm is applied to obtain the high-performance joint motor quickly.