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以氧化塘-浮石床湿地复合系统为研究对象,探讨了该系统在旱期与雨期工况下分别处理城市旱期低污染河水与雨期重污染河水的运行状况,结果表明：该复合系统可有效处理旱期低污染河水和雨期重污染河水。系统在旱期工况（塘与湿地的水力负荷分别为0.22,0.37 m/d）与雨期工况下分别处理低污染河水和重污染河水的出水中SS、COD、TP、TN与NH4＋-N均达GB 18918—2002《城镇污水处理厂污染物排放标准》的一级A标准。“,”The combined system of oxidation pond and subsurface constructed wetland using pumice as substrate was studied in Kunming.This system with two different operating behaviors was used to treat urban slightly polluted river water in dry spell and urban heavily polluted river water in rain spell respectively,and the operation of it was discussed.The results show that the system can treat polluted river water efficiently.The concentrations of SS,COD,TP,TN and NH＋4-N in treated water by the system with two different operating behaviors met the standard A of grade I in ＂Discharge Standard of Pollutants for Municipal Waste Water Treatment Plant＂（GB 18918—2002）.