According to the forming characteristics of injection moulds is divided into thermosetting plastic mould, thermoplastic plastic mold two; In accordance with the molding process is divided into the mold, blowing mold, casting mold, hot forming mold, extrusion mold (mold), injection mould, etc., the thermal model can be divided into the overflow type material overflow way, half overflow type, not overflow type three, injection mould was pouring system can be divided into two cold runner mold, hot runner mould; According to the loading and unloading way can be divided into two kinds of, portable and stationary.