The ecological environment of China' s western agriculture is very fragil e.Different kinds of agricultural disaster,which exist widespread an d occur frequently,are the importan t factor which restrict the sustained devel-opment of western agriculture and national economy.On the basis of analy zing the features of agricultural di saster and the effect in causing disasters,the paper puts forward primary count ermeasures on ecological agricultu re con-struction from the point of keeping a sustained development of western ag riculture.