A humidifying apparatus, including a water tank, a water pump, a wet curtain assembly, and a water passage structure. The water tank has a water storage chamber. A water inlet of the water pump is adapted to communicate with the water storage chamber. The wet curtain assembly is disposed above the water storage chamber and has a water supply port and a drainage port. The water passage structure is an integrated structure and includes a water inlet channel and a return water channel spaced apart from each other. An upper end of the water inlet channel is connected to the water supply port, and an upper end of the return water channel is connected to the drainage port.

Provided is a humidification and air cleaning apparatus. The humidification and air cleaning apparatus includes: a water tank storing water; a visual body forming at least a portion of the water tank and formed of a transparent material; a top cover assembly disposed over the water tank and including a water supply flow passage disposed therein to supply water into the water tank; a watering housing disposed inside the water tank and rotating inside the water tank; and a watering motor rotating the watering housing. Here, when the watering housing rotates, water supplied to the water supply flow passage drops on the watering housing to be scattered.