The invention relates to an air-conditioner deodorizing excessive moisture device, belongs to the technical field of air conditioners. According to the scheme of the invention, the air-conditioner deodorizing excessive moisture device is manufactured by filtering air-conditioner air by utilizing a moisture rotating cage according to the requirements of a deodorizing device in Air-conditioner Deodorizing Method; the outside of the rotating cage is a sponge-shaped filter net with good water absorbing and breathing properties; the two ends of a hollow cylindrical rotating cage are shielded; the lower part of the rotating cage is soaked into a water tank of a sterilizing deodorizing liquid medicine agent; a water controlling roller which rotates clockwise to the right upper part controls the water moisture content of the filter net of rotating cage which rotates counterclockwise; when the air-conditioner air enters the air-conditioner deodorizing excessive moisture device from a strip-shaped rectangular air inlet pipe, the air-conditioner air penetrates through a sterilizing deodorizing moisture filter net on the surface of the rotating cage to perform air-with-water and water-into-air exchange, so that the air becomes the sterilizing and deodorizing excessive moisture medicine air; the sterilizing and deodorizing excessive moisture medicine air enters through a strip-shaped air suction port in the axis of the rotating cage, and then is sucked and conveyed by an external fan from one end of the rotating cage, so that a bacteria taste quality source accumulated on the working surface in an air conditioner and an air supply pipe is subjected to effective sterilizing and deodorizing treatment.