The invention discloses an energy-saving high-pressure cleaning machine, and belongs to the technical field of cleaning equipment. The high-pressure cleaning machine comprises a casing, wherein an air storage cavity and a water storage cavity are vertically formed in the casing, a motor pump is arranged in the water storage cavity and connected with a sprayer through a high-pressure water pipe, the sprayer comprise an upper sprayer body and a lower sprayer body which are fixedly mounted together, the upper sprayer body and the lower sprayer body jointly form a blowing cavity, a brush plate is fixedly mounted on the lower sprayer body and provided with a plurality of bristles, a plurality of water outlet holes are formed in the brush plate and located among the bristles, the lower sprayer body is connected with a water inlet pipe, an air inlet channel communicated with the blowing cavity is formed in the upper sprayer body and communicated with the air storage cavity through an air pipe, and a pressurizer which can increase the pressure of airflow entering the blowing cavity is arranged between the air inlet channel and the end part of the water inlet pipe and located in the blowing cavity. The cleaning machine has the advantages of energy saving, water saving, good washing effect, long service life and the like, and can be widely applied to vehicle cleaning.