Based on the characteristics of current water resources in Yantai City, Shandong Province, the supporting capacity of water resources of thirteen individual dist ricts in the city is analyzed and evaluated using the index system consisting of seven indices in three categories of the amount of water resources and their ex ploitation, regional development and ecological environment. Results show that water resources are inconsistent with population, economy, arable land, ecological environment, and so on. So the supporting capacity of water resources is insufficient to regional development. Furthermore, there is a spatial difference in the support ing capacity of water resources.Water resources in the six districts of Laishan district, development area, Longkou City, Laizhou City,Zhaoyuan City and Changdao County are not matched with regional development, which indicates that the water resources have already rest ricted sustainable development of these dist ricts. Therefore, scientific management, reasonable utilizat ion and opt imized allocation are required to ensure the sustainable development of regional water resources in Yantai City.