The invention relates to a medical device, more particularly, a medical oral cavity examination cleaning device, including an operation box, a lifting box, a lounge chair, a pressurized water tank, awater tank, and a water tank inlet, and can solve the problem of simple structure and single function of the existing oral cavity inspection device, and the problem that the oral cavity of the patientis not cleaned thoroughly when cleaning the mouth of the patient, and patients with existing oral examination devices cannot undergo examination in the most comfortable position. The upper end of theoperation box is provided with a water hose tray base, a water hose tray, a water hose tray rocker arm, a water hose, an operation platform, a spray nozzle base, a draining plate, a spray nozzle, a pulley, a shadowless lamp, a spherical shaft base, a spherical shaft, a lead screw positioner base and a lead screw positioner.