Abstract: China is vast in territory and is rich in water resources.China′s water resources account for 6% of the world′s total freshwater resources and rank sixth in the world.But China′s per capita water resources are only 14 of the world average.Major sources of funding and investment use of investment in water conservancy construction nearly 10 years in China were introduced.SPSS statistical software and exponential smoothing model were used to predict the investment of water conservancy in the next few years on this basis.It had reference significance to sustainable development of water conservancy construction in China.