A fan for use in a wet type air cleaner serves to suction indoor air through an air suction inlet while spraying wash water toward the indoor air, thus allowing dusts or harmful substances in the air to be adsorbed by the wash water. The fan includes a main body disposed in an air circulation passage of the air cleaner and being rotated by a motor, a plurality of blades, installed on an outer peripheral surface of the fan main body, for generating a suctioning force for the intake of air, and a spray unit for dispersing wash water in a circumferential direction of the fan main body, thus allowing the wash water to contact the air and adsorb harmful substances from the air.