Guizhou Province is located in the karst mountain area and a large quantity of surface water leaks because of the karst environment.It is difficult to develop its water resources and thus its water resource availability rate is very small.It is known that the population and the GDP that water resource availability can carry are far beyond what the gross water resource can carry.The amount of gross water resource in the province is abundant,but the population that water resource availability can carry is far beyond its ability.The provincial economy can not satisfy the needs of people because of its underdevelopment.Population is a most important factor that restricts the development of Guizhou Province.The large population and the undeveloped economy matching with the karst environment lead to the unsuitable matching conditions of water resources,population,and economy.