Provided is a humidification and air cleaning apparatus. The humidification and air cleaning apparatus includes: a water tank storing water; and a discharge humidification medium housing disposed over the water tank and disposed over a discharge flow passage flowing via the water tank and the water supply flow passage supplying water into the water tank. Here, the discharge humidification medium housing includes: a reservoir disposed in the water supply flow passage and storing water supplied into the water tank when water is supplied from the upper side; and a water outlet formed in the reservoir and supplying water of the reservoir into the water tank.