The invention relates to a crossbeam press multi-hydraulic cushion synchronous control system which comprises a plurality of groups of hydraulic cushions, a hydraulic cushion cylinder and an ejector cylinder, wherein the hydraulic cushions are connected with the hydraulic cushion cylinder and the ejector cylinder, the hydraulic cushion cylinder is connected onto a low-pressure return oil pipe by a hydraulic cushion control valve group which is connected with a control oil pipe, a retreat cavity oil inlet of the ejector cylinder is connected with the hydraulic cushion control valve group and a J-shaped electromagnetic directional valve, an ejector cavity oil way of the ejector cylinder is connected with the low-pressure return oil pipe by a safety overflowing valve, and the crossbeam press multi-hydraulic cushion synchronous control system is characterized in that the ejector cavity oil way of the ejector cylinder is further connected with a one-way valve and a synchronous cylinder which controls the hydraulic cushions to be synchronously ejected and retreated. The crossbeam press multi-hydraulic cushion synchronous control system has the advantages of being capable of ensuring that the multiple hydraulic cushions can be synchronously ejected and retreated, controlling a mold core in a mold to stably work, avoiding blocking of the mold core, improving the press forming precision and pass percent of a car crossbeam, and being convenient to debug and simple to maintain.