A motion control system comprises a power module, a plurality of servo motors, a servo control module, a motion control module and a microprocessor; the power module controls the working power supply output by the alternating-current power supply; the plurality of servo motors converts current signal of the output current flowing to an encoder output signal; the servo control module converts the encoder output signal into a first logic control signal; the microprocessor converts the first logic control signal into a third control signal and controls the servo control module to adjust the power module, which changes the working power supply output by the alternating-current power supply so as to drive servo motors. The invention provides a motion control system which integrates motion controller and supports multi-axis alternating-current servo driver to realize automatic control of the servo driver and improve control precision of the servo driver.