The utility model relates to a cutting wedge type drum for a coal mining machine of coal equipment. The cutting wedge type drum adopts a novel coal cutting principle and structure to improve lump coal rate, and is provided different three parts from the existing common drums: a cutting jib (1), a wedge (2) and a spiral blade (3), wherein the cutting jib (1) is similar to the end plate of the existing common drum and used for cutting a ditch on the coal wall side; the outer surface of the wedge (2) is a spatial slope and wedged into the ditch cut by the cutting jib (1) with the traveling of the coal mining machine, and is used for wedge cleaving coal on the outer side of the ditch by depending on the traveling of the coal mining machine and the rotation of the drum; and the spiral blade (3) has a taper angle-shaped outer edge and no cutting teeth, and is mainly used for loading coal, and plays the role of helping cut coal as the taper angle of the outer edge of the spiral blade cleaves coal which is not wedge cleaved.