Desktop Fast Pressurized Steam Sterilizer is a mini medical sterilizing device. The sterilizer uses electric heater to heat the pure water, which was put in advance in the sterilization chamber. The pressurized steam generated meets the sterilization requirement and sterilizes the objects needing sterilization. The sterilizer is equipped with a pressure controller which can be preset at within the working pressure range of 0.01489MPa-0.21MPa, the temperature could be 103degrees~134degrees. The sterilizer is also equipped with a timer to control the sterilization time. It can be preset at within 1min~99min59sec minutes according to sterilization requirement, and has heater overload protection and sterilization ending buzzer alarm functions. The sterilizer can be easily operated and is safe and reliable. The waste steam in sterilization chamber and safety valve is discharged into water tank of the sterilizer to ensure a clean and dry working environment.