The invention discloses a large-size metal plate forming and conveying system. The large-size metal plate forming and conveying system comprises a bottom plate; the upper end of the bottom plate is vertically provided with a supporting plate, and the upper end of the supporting plate is fixedly connected with a transverse plate; the upper end of the bottom plate is provided with a second electricslide rail, and the second electric slide rail is slidably connected with a second electric slide block; the upper end of the second electric slide block is fixedly connected with a moving plate, andthe upper end of the moving plate is symmetrically provided with two limiting grooves and two vertical blocks; the opposite side walls of the two vertical blocks are both rotationally connected with first threaded rods; the outer side walls of the two first threaded rods are both fixedly connected with first driven wheels; and the inner side walls of the two limiting grooves are both fixedly connected with first servo motors. The large-size metal plate forming and conveying system is reasonable in structural design, easy to operate and capable of being operated by a user automatically, human resources are saved, in addition, the stability in the working process can be ensured, and accidents are avoided.