PROBLEM TO BE SOLVED: To provide an air cleaning device, capable of performing high-level and sure air cleaning while preventing deterioration of sterilization function.SOLUTION: The air cleaning device includes: a dust removing unit 16 for removing dust in inflow air A； and a sterilization unit 17 for removing bacteria in the air A on the downstream side of the dust removing unit 16. The dust removing unit 16 includes a washer medium 27 and an atomizing device 28 which sprays dust removing liquid to the washer medium 27. The sterilization unit 17 includes a sterilization element 20 and a dripping portion 22 which delivers sterilization liquid 21 by drops to the sterilization element 20. The atomizing device 28 sprays the sterilization liquid 21 dropped from the dripping portion 22 to the sterilization element 20 as the dust removing liquid.
