On survey of non-point source pollution in China and prospect of treatment

From the fact,the paper surveys the characteristics of the non-point source pollution and the main dangers,explores the main prevention methods according to the specialty of the non-point source pollution,analyzes the difficulties in the treatment of the non-point source pollution,and indicates the control can be undertaken from the source and the sink,so as to treat these non-point source pollution before its entry of the water bodies of the earth surface.