Ejin Oasis located in the lower reaches of the Heihe River. The oasis has important ecological functions, including its role in protecting ecological function in the arid district of western China. In recent years, due to human activity and climate change, a series of changes have taken place in the ecological environment of the oasis. Analysis of changes in the water environment of the oasis, vegetation evolution and terrestrial ecological change has enabled proposal of ecological restoration and rehabilitation methods for Ejin Oasis. The proposals are aimed at reestablishing the natural cycles of the oasis ecosystem.