Abstract: During September 1981,August 1982,and September 1983 to January 1984,a study was made concerning the beavers' architecture and their habit of inhabitation in Buergen River area Xinjiang Wei-wu-er Autonomus Region. The beavers' architecture which consists of burrows,lodges,burrowlodges,dams,canals,and stockpiles is just like those in Europe and North America. The beavers have three kinds of habit of inhabitation.They live in burrows,in lodges or in burrow-lodges.The burrows tend to be situated in high form of bank along the shores.The lodges are usually built at the shallow water zone or in low forest-land of bank along the shores.The burrow-lodges seem to be situated in middle form of bank along the shores.The most of them live in burrows.Only a few in lodges.The others in burrows-lodges. It is the adapting main manner for beavers to build dams for keeping the suitatble water environment.We do find that the beavers can build dams and lodges for inhabitation It's important to protect beavers' water environment of forest and their burrows,lodges,burrow-lodges,dams and canals,so that we can get good effect of preservation of the precious beavers.