The invention relates to a griddle trimming method and a die for the griddle trimming, belonging to the field of food processing equipment, which mainly solves the technical problems of unstable effect and complicated procedure in prior art. The invention mainly adopts the technical proposal that the die of the griddle trimming comprises a base, on which a cylinder with a plurality of openings atboth ends is arranged, an upper die with a trimming groove, and a lower die with a die cavity arranged inside the cylinder; the upper part of the base is connected with the lower part of the lower die through a piece of elastic equipment; a plurality of lower die wedges are arranged around the lower die, and a plurality of cylinder wedges are arranged on the inner wall of the cylinder. The invention has the advantages of simple method, stable trimming effect and cost saving.