Based on RS and GIS, taking the ETM data in 1999, vector data in 2009 as the data source, the temperal-spatial change characteristics of land use/cover of Delhi City in Qinghai Province from 1999 to 2009 were analyzed, and the evolution trend of land use/cover in the next 20 years was predicted with the Markov model. The results showed that, grass land was the main type of land use, the area of grassland reduced largestly, and the reduced area degenerated to unused land. The area of unused land reduced was next only to grassland, and the reduced area mainly transformed to woodland. The area of arable land reduced next to unused land, and the reduced area also mainly transformed to woodland. The area of woodland increased at most, mainly from the conversion of arable land and unused land. The degree of spatial dynamics of arable land was the biggest, followed by woodland. In the next 20 years, the area of arable land and grassland in Delhi City will continue to decrease, and woodland and construction land continue to increase.