the present invention relates to a metal mold for producing a synthetic resin molded product , particularly a thermoplastic resin molded product , which is characterized by comprising : a first mold , a sliding mold that is allowed to slide over the entire outer circumferential face or on a portion of said first mold , a second mold having a parting face that is capable of contacting the face of the outer circumference of said sliding mold , and a mechanical clamping mechanism that makes the outer circumferential portion of the said sliding mold mechanically coupled to said second mold , wherein said sliding mold has a sliding direction that is the same as the opening and closing direction of the two molds , that is , the first mold and the second mold , and the sliding face between the first mold and the sliding mold is located inside the outer circumferential line , of a plane projection figure in the opening and closing direction of the metal mold , of a synthetic resin molded product which is molded by the metal mold for producing a synthetic resin molded product . when the metal mold of the present invention is used for producing a synthetic resin molded product , it becomes possible to eliminate burrs being produced along the outer circumferential line , of a plane projection figure in the opening and closing direction of the metal mold , of the synthetic resin molded product , thereby making it possible to produce a product with good appearance .