The water-saving cooling tower is an industrial heat exchange device in which the ambient air is used as the cooling medium and the air forced by the fan sweeps outside the finned tube to cool the high-temperature process medium inside the tube. Natural air is used as the cooling medium to save precious water resources, reduce the discharge of industrial sewage and protect the natural environment. Especially in the northern region of our country, the air resources are good, the advantage of air cooler compared with other heat exchange methods is more obvious, and widely used in chemical industry, petroleum, power, metallurgy and other industries.