According to the represetive and long-term hydrology sample data in Changjiang basin

this paper analyzes the sand transporting capacity variance situation

seeks the relevance and relates mutually of water sediment

probes into the development tendency of soil and water loss in Changjiang basin.In addition

the author gives the present situation and the forecast of the soil erosion government work in Changjiang basin.It can provides the scientific basis for the conservation of water and soil

the water resources conservation

the flood prevention

the river course management

and the hydraulic engineering safe operation

and so on.