It is a reason which causes eutrophication pollution of rivers that the excessive phosphorus is imported. The river sediment is an important material storehouse of the phosphorus. The surveys of phosphorus pollution in river sediment is essential to water eutropication pollution. The results of the survey show that the pollution degree of town river is greater than which of the district river and village river. In Zhujiajiao town

town river is much serious about the phosphorus pollution

but in Fengjing town

district river is much serious

in summer the eutropication pollution of water breaks out

the survey also show that the sum phosphorus in sediment is highest in summer

the content of phosphorus in sediment is an important factor to cause water eutrophication pollution. The survey results provide us some theory base on fathering the pollution of eutrophication.