Waste gas treatment device with cleaning function

The utility model belongs to the technical field of waste gas treatment equipment, and particularly relates to a waste gas treatment device with a cleaning function, which comprises a treatment device body, a control button arranged on the outer side of the treatment device body, a gas injection port arranged above the control button, a connecting shaft arranged in the treatment device body, and a transformer arranged at the bottom of the connecting shaft. A first treatment layer is arranged below the transformer, a second treatment layer is arranged below the first treatment layer, a water injection pipe is arranged below the second treatment layer, a valve is arranged in the water injection pipe, a water storage tank is arranged at one end of the water injection pipe, a drainage pipe is arranged at one end of the water storage tank, a valve is arranged in the drainage pipe, and a drainage nozzle is arranged at one end of the drainage pipe. An exhaust pipe is arranged below the drainage pipe, a connecting bo