The invention provides a control method of an arc edge/angle forming mold. The method is applied to equipment of multiple punching mold blocks distributed along an arc edge/angle edge. The method comprises the steps that according to the current bent angle of the to-be-machined arc edge/angle edge, grouping information of the multiple punching mold blocks is acquired, and displacement information between the punching mold blocks is included in the grouping information; the punching mold blocks are driven to be arranged into a current punching mold group according to the grouping information of the multiple punching mold blocks; and the current punching mold group is used for punching the to-be-machined arc edge/angle edge. The problems that an existing forming springback prevention mold is poor in adjustability and high in use cost are solved. According to the control method, through judgment on the bent angle, dynamic design is carried out on punching molds, and therefore punching area design is carried out on the bent part according to actual stress, and finally the influence caused by the bent shape on punching springback is reduced most effectively. Meanwhile, dynamic design can be carried out on the molds according to different bent shapes and angles.