The wavy subsurface flow constructed wetland(W-SFCW)pilot system in a development zone inNorthern China was selected as the researching object to discuss the treatment effects on the scenic water ofthe river.Parameters including COD,TN and TP were monitored during a continuous operational period ofmore than 4months.The results showed that the removal efficiency of COD,TN and TP achieved 32.45%,43.35%and 39.24%respectively.The average effluent concentrations of TN and TP met the classⅣof surface water environmental quality regulation(GB3838-2002).By comparing the different effects in spring,summer and autumn using single factor analysis of variance,it was found that seasonal variations affected theremoval of COD and TN significantly,but the influence on TP removal was minimal.Based on these findings,some measures were proposed to insure the stable operation of W-SFCW,which provides the foundation for the application of W-SFCW to restoring scenic water and the maintenance in management and engineering.