The invention relates to a chain K-type accessory plate automatic punch forming technology. A multi-station continuous punching die is adopted for stepping punch forming of a steel strip, and the multi-station continuous punching die carries out layout; the ends of accessory plate parts of two adjacent K-type accessory plates are opposite in direction, the extending directions of the ends of the accessory plate parts are perpendicular to the stepping conveying direction of the steel strip, and the multi-station continuous punching die is sequentially provided with a punching station, a trimming station, a primary bending station, a precise bending station, a first blanking station and a second blanking station in the stepping conveying direction of the steel strip. Punching, trimming, bending, blanking and other machining processes are integrated in one punch press to be automatically and continuously conducted, so that machining time is saved, cost is reduced, efficiency is improved, devices and manpower are greatly reduced, production energy consumption is lowered, and product machining procedures are greatly shortened.