Abstract: Using the analytic hierarchy process(AHP), the benefits were analyzed and evaluated, of comprehensive management of Anjiagou small watershed in Dingxi, Gansu during 2001-2005. In Anjiagou small watershed, the comprehensive benefit value increased 168.57％ and the ecological benefit value improved 56％ during the 5 years from 2001 to 2005; the vegetation coverage increased from 10.1％ in 2001 to 21.3％ in 2005, the control degree of soil and water loss improved from 72.6％ to 84.0％,the modulus of soil erosion decreased from 4 627 t/(km²·a) in 2001 to 1 300 t/(km²·a) in 2005;the agricultural input-output ratio decreased from 0.95 to 0.82,the productivity of labor increased from 8 074 yuan /person per year to 9 167 yuan/person per year,the land productivity improved from 267 yuan/667 m² to 343 yuan/667 m², and the average increasing rate was 28.46％;the rural per capita net income improved from 1 620 yuan in 2001 to 1 748 yuan in 2005, and increased by 7.9％. Based on the result, it was regarded that: through carrying out a series of management measures, the ecological, economic and social benefits in Anjiagou small watershed were all increased to some extent; the ecological and agricultural production environments were obviously improved; the living standard of local people were remarkably elevated; the harmonious development trend of agriculture, forestry and animal husbandry has come into being; the ecological economy and social multiplex system in Anjiagou small watershed were developing towards sustainable, steady and harmonious trend.