PURPOSE: To utilize water inexpensive in cost as a filter by forming the water filter to the inside of the flow of air which is introduced through an air suction port and discharged from a suction fan and providing both a pump and a pipe for recycling the water.

CONSTITUTION: The air introduced through an air suction port 2 is introduced into the water incorporated in a tank 3 by means of an air induction cover 8 and therein dust, dirt and odor are absorbed and it is made to the purified air and discharged to a purified air chamber 9. This air purifier is made to a two-stage structure wherein the dust which is not sufficiently removed in the inside of the tank 3 is passed through the inside of slowery liquid discharged through a spray nozzle 5 and the purified air is resent to the chamber with a suction fan 4. It is made to such a structure that therein the water discharged through the spray nozzle 5 falls into the tank 3 and is sent to the spray nozzle 5 with a pump to recycle water.