The automatic self-cleaning filter system is mainly used in terms of water purification. And it can be used for water filtration, water treatment, and water transformation in industries, agriculture, power, electronics, medicine, food, printing and dyeing, construction, steel, metallurgy, papermaking, coal mine, swimming pool, landscape, greening, and other industries, especially in the field of microfiltration in the procession of high water quality requirements. Using its various functions, the automatic self-cleaning strainer can remove many kinds of impurities to achieve the purpose of water purification, such as silt and biological silt, clay, rust and corrosion products, suspended matter, algae, and bacteria with high molecular, organics and other small matter.