The invention provides a multi-motor optimization control system and an optimization control method thereof. The multi-motor optimization control system comprises multiple motors, wherein each motor is connected with a sensor I/O module and a driver; all drivers and sensor I/O modules are connected onto an upper computer; and a one-key tour round button is arranged on the upper computer. The control method comprises the steps of when using for the first time, determining the use quantity; preferably selecting and starting motors; automatically optimization controlling the use quantity of the motors: after a motor runs for a long time, clicking the one-key tour round button, automatically starting one standby motor through the system, stopping the motor running for the earliest time after the standby motor starts normally, and ensuring each motor is located at the optimal working state; and if the motor in use is disorderly shutdown, automatically starting the standby motor through thesystem. According to the multi-motor optimization control system and the optimization control method thereof provided by the invention, by adopting an intelligentized design and aperiodic manual tourround, each motor is located at the optimal state, the use quantity of the motors is intelligently ensured, and the multi-motor optimization control system and the optimization control method thereofare particularly suitable for applicably and conveniently controlling a large-scale modernized public workshop.