The utility model discloses a cylindrical rotatable padding type direct evaporation cooling air-conditioner which comprises a cylindrical shell body. The axial direction of the cylindrical shell body is in the horizontal direction. An air inlet and an air outlet are respectively formed in the two opposite wall faces of the cylindrical shell body. A primary filter, a mist spray direct evaporation cooling device, a water fender and an air supplier are sequentially arranged in the cylindrical shell body in the air inlet direction. According to the cylindrical rotatable padding type direct evaporation cooling air-conditioner, a unit is designed into a cylinder shape, so that air flow resistance is reduced, and materials are saved; further, a spraying and dripping combination mode is adopted for the unit, so that direct evaporation cooling efficiency is greatly improved, the leading function of evaporation cooling is fully utilized, and the air conditioner unit is made to have the advantages of protecting the environment, being efficient and saving energy.