The invention discloses a split piston for a compressor, comprising a piston head, a piston skirt and holding pins, wherein, the piston head and the piston skirt are separated from each other; a semi-piston pin hole, a semi-slot, a positioning projection, a fixed pin hole and an inner cavity are arranged on the piston head; a semi-piston pin hole, a semi-slot, a positioning groove, a fixed pin hole and an inner cavity are arranged on the piston skirt; the semi-piston pin holes of the piston head and the piston skirt form one piston pin hole, the semi-slots of the piston head and the piston skirt form one slot, and the piston head and the piston skirt are fixedly connected by the holding pins through the fixed pin holes to form one piston. The piston pin holes and the piston slot of the split piston for the compressor do not need to be processed by the rough machining processes of drilling, recessing, and the like, and can effectively reduce the material consumption of the parts.