Ultrasonic controller of oral care instrument

The utility model discloses an ultrasonic controller of an oral care instrument. Controller comprising a controller body, a control panel is installed on the surface of one side of the controller body, a plurality of vertically-distributed heat dissipation openings are formed in the first side plate, a heat dissipation fan is embedded in the surface of the second side plate, damp-proof plates areinstalled in the first side plate and the second side plate, moisture absorption plates are installed in the damp-proof plates, and pull handles are installed at one ends of the moisture absorption plates. According to the utility model, the heat dissipation fan and the heat dissipation window are respectively arranged on the surface; therefore, the circulation of air in the controller main body is accelerated through the cooling fan; this reduces temperature, meanwhile, the damp-proof plates are installed in the side plates, the moisture absorption plates made of silica gel materials are installed in the damp-proof p