The invention belongs to the technical field of machining equipment, and relates to a cutting tool holder for cutting four gaskets. The cutting tool holder for cutting the four gaskets comprises a cutting tool holder body which is fixed to a machine tool slide, wherein a plurality of cutting tool slots are formed in parallel in the upper surface of the cutting tool holder body and pass through thetop parts of the cutting tool holder body; a cooling hole which penetrates the cutting tool holder body in the length direction is obliquely arranged below each cutting tool slot; a plug is arrangedat the feeding end of each cooling hole in a sealing manner; a chamber of each plug communicates with the feeding end of each cooling hole; a threaded hole which communicates with each chamber is formed in each plug; a pressing plate for compressing a cutting tool into each cutting tool slot is fixedly connected to the top part of the cutting tool holder body. According to the cutting tool holderfor cutting the four gaskets, the technology is innovated for solving the problem of low gasket processing in the prior art; the gasket processing efficiency is effectively improved; the labor cost isdecreased; and meanwhile, the yield of parts can be greatly increased.