Urban soil and water loss is trending towards seriousness and universality.It is more necessary to control urban soil and water loss.It takes place at urban fringes,and the building actions are the radical cause of its forming.Compared with natural soil and water loss,urban soil and water loss has the features of artificiality,complexity,seriousness and regulation. Urban soil and water loss should be comprehensively controlled by coordinating the relationship between building actions and environment and restraining unreasonable action of man-kind