In order to improve the control performance of brushless DC motor (BLDCM), a new integral separation PID control algorithm based on traditional PID control method is proposed. The new integral separation PID control algorithm is applied to BLDCM speed and current closedloop control. The control method not only has strong antiloaddisturbance ability, but also can effectively solve the problem existing in traditional PID control that system oscillation may occur when the control quantity of the system exceeds that of the controlled object. The new integral separation PID control algorithm combines the advantages of the integral separation PID control algorithm and the PID control algorithm with dead zone. It can not only prolong the service life of the control system, but also limit the system deviation. The effectiveness and practicability of the proposed method are verified by MATLAB/Simulink simulation and experiment.