The invention discloses a synchronous control system and method for automatic press line pressing equipment. The system comprises a position encoder, a synchronous controller and a main drive frequency converter. The position encoder is arranged on an eccentric shaft of the pressing equipment for collecting position angle signals of the pressing equipment and sending the collected position angle signal data to the synchronous controller. The synchronous controller adjusts a given speed value of the pressing equipment from the shaft after analyzing and processing the received position angle signals, and sending the adjusted given speed value to the main drive frequency converter. The main drive frequency converter controls a main drive motor of the pressing equipment according to the adjusted given speed value. According to the synchronous control system and method, the running speed of the pressing equipment of automatic press lines is coordinated in a unified mode, it is ensured that the running phase difference of the pressing equipment is constant, the closed-loop control over the pressing equipment is achieved, the reliable and safe continuous running of the pressing equipment is achieved, and therefore the operability, flexibility and the soft and rapid performance of a production line of the pressing equipment are enhanced.