At the same time, indoor drying also has an impact on household items, which is easy to lead to dry crack and deformation of wood structures such as solid wood furniture and musical instruments. At the same time, it is also easy to cause static electricity and damage electronic products such as computers and electrical appliances. Increasing indoor humidity can moisten the dry air, and the moisture in the air can also be combined with the floating smoke and dust in the air to precipitate it. It can also reduce the paint smell, mildew smell, smoke smell and odor to a certain extent, so as to make the air more fresh. Humidification can also moisturize the skin, promote blood circulation and metabolism of facial cells, relieve nervous tension and eliminate fatigue