Based on the nationwide, the authors selected Zhejiang province in the east, Hunan province in the center and Qinghai province in the west as research object, which are the typical examples of water resources utilization. The theory of comparative advantage and the comparative advantages of use of water resources of calculation model were utilized to calculate and analyze the comparative advantages in Chinese eastern, central and western provinces. Results indicated that: ① There are different degrees of department differences in the productio...