The invention relates to an apparatus for forming color steel plates, comprising a bottom plate, forming devices and an auxiliary device, wherein the bottom plate is of a concave structure, holes areformed in left and right side faces of the bottom plate, the forming devices are installed on the inner side face of the bottom plate in the front-back direction, and the auxiliary device is installedon the inner side face of the middle part of the bottom plate. The apparatus can solve the problems that the existing color steel plate forming equipment cannot properly fix color steel plates when the color steel plates are subjected to die-casting forming, cannot timely auxiliarily forming the color steel plates after the color steel plates are die-cast, and cannot transfer the formed color steel plates by good connecting devices after the color steel plates are formed, and the like; and the apparatus has the function of forming high-quality color steel plates, and has the advantages that the color steel plates can be fixed well when the color steel plates are die-cast, the color steel plates can be auxiliarily formed in time after the color steel plates are die-cast, and good connecting devices are provided for transferring the color steel plates after the color steel plates are formed.