Water pressure booster

The utility model relates to a water supercharger which includes a cylinder; the upper part or the top part of the cylinder is provided with a water inlet; the top part of the cylinder is provided with a compressed air inlet; the bottom part of the cylinder is provided with a water outlet; the water inlet is provided with a water inlet solenoid valve; an air inlet solenoid valve is arranged at the location of the compressed air inlet; the water inlet solenoid valve and the air inlet solenoid valve are controlled by a control unit module. Only three cuts are arranged on the cylinder; the water inlet load is controlled through controlling the water inlet time; the compressed air is controlled to be directly acted on the surface of the water for pressing the water into a flushing pipeline; the whole device has a simple structure, a simple control mode, works stably and reliably, has no pressures loss, has a good pressurizing effect, has no easy-aging and easy-damaging parts as well as is conveniently maintained.