The invention discloses an ultrasonic urban wastewater garbage treatment device with tail heat utilization and slag removal machine, which comprises a large sewage tank, an incinerator, a countercurrent drying tower, a horizontal screw centrifuge, counter-rotating rollers, a heat pump host and a computer The control system, the urban waste water pipe is connected to the waste water buffer tank, the buffer tank is equipped with a grid slag remover, the grid slag remover is connected to the conveyor, the waste water buffer tank is connected to the inlet of the large sewage tank through the sewage pipe and the sewage pump, and the large sewage tank Appropriate amount of stirring device and sinusoidal ultrasonic excitation stirrer are installed, the bottom of the cone is connected with Roots blower, bottom valve and mud pump through pipelines, and the mud pump is connected with horizontal screw centrifuge, screw closed air feeder and countercurrent drying tower in turn, and the tail of the drying tower is The trachea is connected to the heat pump system, and the lower left part is equipped with a cosine rubber disc pulse explosion device, and the processing device is controlled by a computer. Treatment of waste water and garbage.