This paper research the financial condition of Tibet based on the policy of preferential financial support from 1980-2010 with the help of comparing the index of financial cover level,credit growth,deposit-loan ratio,the actual rate of return,operating costs,we found that the preferential policies has a motivate function to the economic development of Tibet region while weaken the degree of marketization of this area,we suggest that the region should take the principle of "appropriate subsidies, and positive incentive". <<