The comprehensive control of the Tiewa small watershed project in Xichan country has been carried out for 3 years (from 1994 to 1996). Its total investment was 2 million and 88 thousand yuan. The project prevented and cured 12. 51km²area of the soil and water loss. The control degree of soil and water loss in the control areas reached 91 percent. The utility of land increased from 32 percent to 91 percent. The covering degree of plants increased to 82. 5 percent from 22. 9 percent. The production force for the land increased to 3 750 yuan/hm²from 1750 yuan/hm². The income of each person increased to 1 710 yuan from 680 yuan per year. The project has shown its obvious economic,ecological and social benefits.