The　micro-polluted　river　water　was　treated　by　using　integrated　horizontal-flow　constructed　wetland.　The　micropolluted　river　water　was　mixed　up　by　effluent　from　wastewater　treatment　plant　in　west　of　Changchun　City　and　Leijia　river　water.　The　experimental　results　show　that　integrated　horizontal-flow　constructed　wetland　has　better　treatment　effect　on　COD,　TP,　ammonia,　nitrite　and　nitrate　nitrogen.　Meanwhile,　the　average　removal　rates　can　reach　54.7%,　87.6%　75%　80%　and　30%　The　main　indicators　of　the　effluent　meet　the　state　standards　for　surface　water　class　V　grade.　©　2011　IEEE.