on the basis of field investigation.location observation and field artificial rainfall test,as well as using remote sensing information source in different periods, the danamic map of soil erosion in different periods are drawn up by consulting maps of land type, soil type, land use and vegetation etc.It shows dynamic change of soil erosion type by means of quantitive and locational maps .and it provides a scientific basis for evaluating soil erosion change.soil and water conserva-tion program, and comprehensive control planning.