In view of worse adaptive ability, robustness and anti-interference ability existed in direct torque control system of asynchronous motor based on conventional PID speed regulator, a new direct torque control method of asynchronous motor based on intelligent neuron PID speed regulator was proposed. The intelligent neuron PID speed regulator was designed by two neuron controllers, and parameters of this speed regulator could be adjusted online. The flux regulator and torque regulator were designed by hysteresis regulator respectively. The simulation results show that the direct torque control system of asynchronous motor based on intelligent neuron PID speed regulator can rapidly track the reference speed changes and the control system has stronger anti-interference performance, adaptive performance and stronger robustness.