Abstract: The Northwest China covers vastarea with rich in natural resources.They are important bases for sustainable economical development and vital component of development of West China.However,located in arid,semi-arid climate belts,these regions are in short of waterr esources and ecologic environment is fragile.In the last half century,there occurred a series of ecologic environment problems related to water such as soil erosion,land desert ification and secondary salinization due to irrational or over-exploitation of water resources.Aiming at these ecologic environment problems in the regions,the paper presents some counterm easures and preventives steps,which include: water resources should be rationally distributed and planned according to drainage area,ensuring not onl y economical water demand,but keeping ecologic environment from damaging as well; surface reservoirs constructions should be strictly restricted,rather the functions of gobinatural under ground reservoirs ought to be fully taken advant age of; water resources evaluation and managements should be considered together; a detached authoritative organization should be established to manage the water resources uniformly.