PROBLEM TO BE SOLVED: To provide a method and device for cleaning air that achieve sufficient purification of contaminated air and high-efficiency removal of germs or the like from contaminated air though the device has a simple structure suppressible of an increase in manufacturing costs.SOLUTION: Air (PA) taken into a container body 2 storing a liquid (A) is pressurized by an air blower 4. The air (PA) is blown into a cylindrical body 3, having openings in its upper and lower parts, from the upper opening 3A of the cylindrical body which vertically extends and whose lower opening 3B is separated from the liquid level of the liquid (A). The air is directed downward while being spirally rotated so as to collide with the liquid (A) and to be mixedly stirred therewith. The purified air (CA) is discharged to the outside of the container body 2 by being directed upward along the outside of the cylindrical body 3. The air (PA), directed downward while being spirally rotated by rotation of blades of the air blower 4 and coming into contact with the inner wall surface of the cylindrical body 3, collides with the liquid (A) and is mixedly stirred therewith so as to be in such a state as if air is washed by liquid. Therefore, it allows the air (PA) to be very efficiently brought into contact with the liquid (A).
