The steam sterilizer is a highly safe sterilizing product with stable function, suitable for major hospitals, clinics and biochemical research laboratories etc., for the sterilization of instrument, cloth, glassware and liquid etc. Designed of double-layers with inner and outer chamber for good drying efficiency, and totally made of stainless steel 304 # (316 # is optional). The outer layer uses thermal insulation wool for heat preservation, and then covered with 304 #stainless steel sheet for both functions of aesthetic appearance and heat preservation. Stainless steel door with radial lever can effectively lock tight the door cover and prevent steam leakage. Silicone door gasket is high- temperature resistant, durable, and without deformation. The chamber body is supported by a stainless steel support, and the height of level can be adjusted from the adjustable footpad of support base.