The desert air cooler can cool a large area and effectively reduce the ambient temperature, which is very suitable for hot and dry climates. When no water is added, it can be used as an ordinary fan; Adding water can reduce the air temperature, increase the air humidity, and keep it fresh; When used with ice crystals, it is like a refrigeration air conditioner, which can significantly reduce the temperature. It is an economical choice to effectively improve air quality and reduce temperature in hot and dry areas.