On the basis of the collection of recent data of annual runoff and precipitation in the Jinjiang river basin in Fujian Province, the statistic characteristics of runoff, including autocorrelation, long term persistence, and statistic component (trend, period) have been deeply analyzes. A predictive statistic model is also established for the forecasting of annual runoff in the control station-Shi-long hydrologic station in the basin. The results show that there is no trend and no long term persistence, but there is periodic component for the time series of runoff in the station. The prediction relative errors for annual discharge are less than 20%. It will be useful for the decisionmaking of flood control and drought resistance in the study area.