Provided is a humidification and air cleaning apparatus. The humidification and air cleaning apparatus includes: a water tank storing water; a base body from which the water tank is separably disposed; a watering housing disposed inside the water tank and rotating inside the water tank; a watering motor providing a torque to the watering housing; a first coupler coupled to the watering motor; and a second coupler coupled to the watering housing, separably coupled to the first coupler, and delivering a torque of the watering motor to the first coupler when coupled to the first coupler.