Taking two false color composite Landsat 5 TM (Thematic Mapper) images of band 4,3,2taken in 1995 and 2000 as data resources, this paper carried out study on LUCC of Zhangye oasis inrecent five years by interpretation according to land resources classification system of 1:100,000Resources and Environmental Database of the Chinese Academy of Sciences. The results show thatgreat changes have taken place in landuse/landcover in Zhangye oasis since 1995: (1) Changes oflanduse structure show that cropland and land for urban construction and built-up area increased, onthe contrary, water area and grassland decreased. These changes reflect the deterioration ofeco-environment and the acceleration of urbanization, and also indicate the problems existing in thearrangement of water and land resources between the upper and lower reaches of the Heihe River.(2) Regional differences of landuse/landcover are evident, characterized by following aspects: inSunan County located in Qilian Mountain area, unused land and grassland decreased, but croplandand land for urban construction and built-up area increased. In Minle and Shandan counties locatedin foothills, unused land, water area and cropland decreased, but grassland and land for urbanconstruction and built-up area increased. In Zhangye City, Linze County and Gaotai County locatedin plain area of the middle reaches of the Heihe River, unused land, water area and grasslanddecreased, while woodland, cropland and land for urban construction and built-up area increased.