Non-point source (NPS) pollution was caused by ballistic substance,agriculture pesticide,fertilizer,pathogenic bacteria and other disperse pollution,which lead to pollution on the ecosystem of aquifer,lakes,rivers and their beaches.Agriculture activity was considered to be the most chief non-point source pollution of water quality in surface water,and urban upper flow was in the next place.Poyang Lake is the largest body of fresh water in China,its basin acreage is seized of 97.5 percent of the land of Jiangxi Province.The ecological function and reasonable resource utilization of the wetland in Poyang Lake plays an important role in the development of regional economy in Jiangxi Province.With the development and exploitation of Poyang Lake,some troubles of non-point source pollution on Poyang Lake are getting worse and worse.The chief non-point source pollution was as follows:agriculture chemicals utilization increased every day;rejected material from intensive breeding of livestock and poultry polluted on rural environment;water and soil flowed and lost badly;exploitation of mines and industry and living pollution might be NPS.NPS made certain adverse effect on the ecological environmènt of Poyang Lake was as follows:rejected material from intensive breeding of livestock and poultry develop the pervade of schistosome focus in Poyang Lake basin ;all kinds of nutrition salt would lead to eutrophication on Poyang Lake,and etc..It was also put forward some policies and strategies of NPS control and management in Poyang Lake in this paper.