In this paper, the Tibet Autonomous Region status of water resources is represented. And through the understanding to water supply quantity of surface water and ground water resources, the degree of development utilization, and on the basis of the statistics, and by calculation and comparison on water supply and water consumption, the water resource utilizations of Tibet Autonomous Region at present and in future are comprehensively analyzed. This study result for scientific use of water resources, protecting eco-environment and realizing sustainable development is of important significance.