Abstract: By investigating and measuring, argueing and contrasting, it was confirmed that the great Yalu Zangbu canyon is the largest canyon in the world, and the largest water vapor passage of on the Qing Zang plateau. Its environment is special, the resources is abundant: the canyon river bed have a group of four large waterfalles; there are developed the glaciers of the monsoonal oceanic type on the top of te mountains; especially there are abundant with the living creature and the water power resources. They are the storage resources for the development of china.

Key words: great canyon, water vapor passage, river bed waterfall, particular environment, rich resource