Injection blow molding, a method of forming a bottom closed parison by an injection molding machine, and then moving the parison into a blow molding mold and blowing compressed air to form a product. The product produced by this method is injection molding, with accurate size, high precision and no trimming; There is no blank at the bottom, with good strength, and a bottle with excellent appearance can be obtained. The first mock exam is the first mock exam, and the material consumption is small. It is suitable for mass production of the same product. It has one mold, one cavity and one mold and two chambers. Different number of cavities have different daily output. The first mock exam is two cavities, and the daily output can reach 20000 pieces per day.