An object of the present invention is to provide an air cleaning method and device that realize sufficient purification of polluted air, high-efficiency removal of germs and the like from polluted air, a relatively simplified structure, and suppression of increase in manufacturing costs.Air PA taken into a container main body 2 containing a liquid A is pressurized by an air blower 4, and is blown into a cylindrical body 3 with upper and lower openings3A and 3B that extends in a vertical direction, the lower opening 3B being separated from a surface of the liquid A, from the upper opening 3A. The air PA then rotates and descends in a spiral manner so as to collide with the liquid A, and plunges into a bottom of a liquid containing part, and is agitated and mixed with the liquid A. The cleaned air CA is raised on an outside of the cylindrical body 3 and discharged to an outside of the container main body 2. The air PA rotating and descending spirally by rotation of blades of the air blower 4 and contact with an inner wall surface of the cylindrical body 3, is agitated and mixed with the liquid A as if the air is washed by the liquid. Therefore, the air PA is allowed to contact the liquid A with high efficiency.
