Oasis is the major area of human activity in the arid land.Its only occupied 4%～5% of arid territory,but the population over 90% and social healthy over 95% are concentrated in it.In the process of oasis formation and evolution,water resource is the essence.Since 1949,the oasis exploitation have gained many achievements in China,but its environment problems originated rapidly from that and more attention has been paid to the economic benefit of oasis water resource rather than the eco environmental benefit...