The automatic blow molding machine is used to produce plastic package such as: milk bottle, jelly package, medicine bottle, juice package, beverage bottle, cosmetic bottle and etc. The raw material that used to produce plastic bottle are PP, PE and PVC. This machine adopted "screw thread to extrude material" blow molding technique. Converter is adopted in the machine in order to control the temperature more precisely as well as saving energy. This machine combined electrical device, pneumatic device and mechanical devoice together in order to achieve automatic working condition. The machine could also provide mouth-cutting service.