Abstract: In this paper,forecasting models,such as multivariate regression model,grey model and mass balance model have been established on the basis of analysis of monitoring data for East Lake,Wuhan City.In order to improve precision,the grey model has been revised by using residual error equation.The population, economy,BOD,COD,TN,TP about 2000 have been forecasted with these models.The proposals of administering for East Lake have been advanced.