The invention discloses a PCB (printed circuit board) punch forming method. The steps of the method are as follows: a. a composite punch die which can tightly contact with the peripheral part of a shearing part of a to-be-punched circuit board substrate is configured, a zonal main shearing supporting plane with certain width is reserved along the edge of a male die, a zonal sub-shearing supporting plane with certain width is reserved around each molded hole, a concave cavity is arranged at the rest part, the surface of a mixed adhesive filled in the concave cavity is slightly lower than that of the male die; a zonal main shearing supporting plane with certain width is reserved along the edge of a stripper plate, a zonal sub-shearing supporting plane with certain width is reserved around each punch needle through hole, a containing cavity is arranged at the rest part, and the surface of the mixed adhesive filled in the containing cavity is slightly lower than that of the stripper plate; b. the punch die is installed on a punching machine and the circuit board substrate is supplied; c. die assembling is carried out, the shearing parts without copper foils at the edge of the substrate and at the periphery of each to-be-punched molded hole are compacted between the shearing supporting planes of the male die and the stripper plate, and each molded hole is punched and cut. With highprocessing efficiency, the invention can prevent the edges of a product and each molded hole from being cracked.