Land use/land cover change (LUCC) can significantly impact the ecological environment. This paper studied LUCC of the Chaohu Lake basin at the basin scale via TM satellite image data, analyzed quantitatively the functions of ecosystem services of the Chaohu Lake Basin in 1988, 1995, 2000 and 2008, and estimated the values of ecosystem service functions and its changes derived from land use/land cover change from 1988 to 2008, it revealed preliminarily the impact of LUCC on the ecological environment.