Hichine Venturi ejector is a kind of high efficient jet device without moving parts, using the fluid to transfer mass and energy. Its composed of a nozzle, a suction chamber and the diffuser tube. With a certain pressure the working fluid sprays out though the nozzle in high-speed, so that the pressure energy can change into rate energy and form a vacuum at the exit area of nozzle, so the medium will be sucked, two phrases of medium in the diffuser mix and exchange energy, the speed energy is reduced into pressure energy, finally two phases of medium discharge above atmospheric pressure. Hichine Venuri ejectors are efficient and of wide range of working pressure. It can form the negative pressure for sucking liquid or gas as long as there is a very small pressure difference between import and export.