During the course of biltic phaumacertics, there is a high requirement for asepsis and heat-free source, accordingly there is also an even higher requirement for sterilizer. According to GMP high standard and by using high standard materials and parts, we designed and manufactured this series of sterilizer. They are mainly used to dampheat sterilize the following products in biotic pharmaceutics; aluminum kegs for all kinds of antibiotic and their rubber covers and other high requirement usages. The structure of this seeeries is double layer. During working, pure steam is full of the inner layer, while the outer uses ordinary boiler steam. Therefore, is has two functions at the same time-vacuum exhaust and dry.