Humidification principle; When the water in the water tank is delivered to the water shower at the top of the humidifier, the water evenly drips onto the top of the wet film. The water shower ensures that the water is evenly distributed onto the wet film material, and the water penetrates down along the wet film material, wetting all layers inside the wet film. The wet film humidifier is simultaneously absorbed by the wet film material, forming a uniform water film; When dry air passes through the wet film material, there is a large area of contact between the dry air and the wet film surface, resulting in a large amount of water evaporation. A large number of water molecules are sent into the space to be humidified by the wind, increasing the humidity of the air and thus achieving the purpose of humidification