Abstract: Rural water pollution and cutrophication caused by effluents from poultry and livestock farm were studied. The rcsuits indicated that the surface water in Yanjin river was seriously contaminated by the effluents both in rising and falling periods. In comparision with National Surface Water Hygienic Standard (Ⅲ), the water pullutioa levels .expressed as oxcess times of cacti pollutant value over eachstandard value were as follows: COD 0. 96——6. 45, total Culiform 11——12839, total bacteria 1039——16399 respectively. TotalColiphages were ranged from 104 to 106 PFU/L. Year average values were as follows, cldorophyll a 11. 64μg/1, to at posspnorous 3. 97mg/ 1, phosphate 1. 96mg/l, pH 7. 96, COD 14. 31mg/l, total bacteria 2. 28×10⁶ml, total Coliform 6.41×10⁷/1. total Coliptiagc 1. 90× 10⁶PFU/1 (host stralas. E. Colt. K-12 and E. Culi. B).