The area near Ebinur lake has become one of the deteriorating area in the Western China.The evolution of ecosystem services value was researched in the past 20 years in this area and the causes also were discussed.According to the ecological character of the research area,the research in China,and the research of Costanza were combined to build the estimating mode. Based on the multi-temporal remotely sensed data of TM, Geographical Information System(GIS),and the estimating mode, the value of ecosystem services were estimated in Bole-Jinghe oasis of Ebinur basin. The total value of the research area is: 85209.14×10⁴$in 1979, 77147.02×1010⁴$in 1991 and 81291.66×1010⁴$in 1999. The trend of evolution of the value of ecosystem services was that 1991 was the round turning point year, and the value was decreasing f rom 1979 to 1991 and st raightening up f rom 1991 to 1999,showing just a sunken curve.