A special-part cleaning and drug applying device comprises a seat ring, a washing basin, a joint, a flow guide tube and a nozzle, wherein the seat ring is a hollow plate, and the upper plate surface and the lower plate surface of the hollow plate are provided with openings; the washing basin is a hollow barrel, the upper end and the lower end of the hollow barrel are provided with openings, the upper end of the washing basin is connected with the lower plate surface of the seat ring, and therefore the opening of the lower plate surface of the seat ring corresponds to the inner cavity of the washing basin; the joint is fixedly arranged on the lower plate surface of the seat ring and is provided with a water inlet hole and a water outlet hole, the water inlet hole is connected with a liquid inlet tube, and the water outlet hole is communicated with the inner cavity of the washing basin; the flow guide tube is arranged inside the washing basin, and one end of the flow guide tube penetrates through the side wall of the washing basin and is connected with the water outlet hole of the joint; the nozzle is connected with the other end of the flow guide tube; an annular groove for containing a washing tube is formed inside the seat ring, the annular groove is provided with a gap corresponding to the washing basin, and water distribution holes are formed in the washing tube; supporting feet are arranged on the lower plate surface of the seat ring. The special-part cleaning and drug applying device can be used for cleaning or applying drug to a special part of the human body, and is convenient and comfortable to use.