Water is essential for life, is the lead carrier of human nutrition cycle, accounting for more than 70% of the human body, is to ensure that human health is one indispensable element, but it also is a vulnerable resource. In modern society, a large number of industrial pollutants, fertilizers, pesticides, insecticides and other harmful substances are being invaded our precious water resources. Conventional sedimentation and chlorination disinfection methods and can not fundamentally solve the problem, and will produce a large number of three-induced harmful substances (carcinogenic, teratogenic, mutagenesis), our water, are endangering our health.