SCJ serial plastic extruding hollow blowing molding machine unit, mainly consisting of extruder, machine head, die spotting machine, forming die and electric control parts, etc, is applicable to blowing various kinds of plastic hollow containers such as PVC, PE, PP and so on, all sorts of beer keep fresh containers, square barrels, round barrels, thermos flask casings, diversified plastic gasoline tanks and varieties of beverage bottles, agricultural chemicals bottles, communication cable and waterproof box, etc. The machine is high in production capacity, convenient in operation and little in energy consumption, which makes it one of the indispensable equipments for manufacturers producing plastic hollow container.