The invention discloses a hydraulic bearing cleaning machine. The hydraulic bearing cleaning machine comprises a box body and a box cover. The box body comprises a water storage chamber, a motor chamber, a cleaning chamber and a rotating disc. The hydraulic bearing cleaning machine is characterized in that the cleaning chamber comprises blocking pieces, a reverse flow diverter and a bearing hanging bracket; the inclination direction, from top to bottom, of the blocking pieces are the same as the rotating direction of the rotating disc; a certain angel is formed between the reverse flow diverter and the inner wall of the cleaning chamber; the direction of a water inlet of the reverse flow diverter is opposite to the rotating direction of the rotating disc; the reverse flow diverter is provided with an inclined groove which is vertically formed; the inclination direction of an inclined opening of the inclined groove is opposite to the rotating direction of the rotating disc; and the rotating disc achieves the ascending and descending function under the effect of a hydraulic press. By means of rotation of a motor, the rotating disc rotates, and a bearing is driven to rotate; in addition, a cleaning agent also rotates in a certain direction; under the effect of the blocking pieces, the cleaning agent cannot splash; the rotating direction of part of the cleaning agent can be changedby the reverse flow diverter, and the impact force is increased; and the bearing can be cleaned more thoroughly.