Industrial jet pump, also known as jet pump and ejector. A pump that uses the injection of high-pressure working fluid to transport fluid. It is composed of nozzle, mixing chamber and expansion tube. In order to make the operation stable, a vacuum chamber (also known as suction chamber) is set at the throat; In order to fully mix the two fluids, there is a mixing chamber behind the vacuum chamber. During operation, the working fluid is ejected from the nozzle at a high speed to form a low pressure in the vacuum chamber, so that the transported liquid is sucked into the vacuum chamber, and then enters the mixing chamber. In the mixing chamber, high-energy working fluid and low-energy transported liquid are fully mixed to exchange energy with each other, and the speed is gradually consistent. When entering the diffusion chamber from the throat, the speed slows down and the static pressure rises, so as to achieve the purpose of transporting liquid.