Booster water pump with automatic pressure regulating function

The utility model relates to the technical field of water pumps, in particular to a booster water pump with an automatic pressure regulating function, which comprises a water pumping mechanism, a cylindrical cavity is arranged inside the water pumping mechanism, a plurality of through holes are arranged on the surface of the water pumping mechanism, and an upper fixing frame at the bottom of an upper pump casing and a lower fixing frame at the bottom of a lower pump casing are mounted through first bolts. The upper pump shell and the lower pump shell are sealed through the sealing gasket, water leakage prevention sealing between the upper pump shell and the lower pump shell is achieved, and the upper pump shell and the lower pump shell are detachable through the first bolt. The driving motor is used and drives the impeller to rotate, water input from the water inlet is pressurized and output to the water outlet, a water pressure signal of the water outlet is transmitted to the controller through the water pre