Using　Xiquan　Lake　wetland　as　an　example,　the　fuzzy　comprehensive　evaluation　method　in　the　application　of　surface　water　quality　assessment　is　discussed　in　this　paper.　This　paper　chooses　six　representative　pollution　index,　calculates　respectively　weight　and　integrated　membership　Dude　of　the　pollution　index　during　dry　season　and　rain　season,　and　overall　evaluates　surface　water　quality　of　Xiquan　Lake　wetland　comprehensive.　Fuzzy　comprehensive　evaluation　results　show　that　water　quality　is　respectively　class　V　and　III　during　dry　season　and　rain　season.　Surface　water　quality　of　Xiquan　Lake　wetland　in　rain　season　is　worse　than　in　dry　season.　The　evaluation　results　are　scientific　and　reasonable,　provide　effective　basis　for　wetland　resources　use　and　management.