Artificial wetland is a kind of efficient,non powered biochemical treatment technology.It can treat organic wastewater and have good effect with low operation cost and simple process.But the reasonable vegetation design will have great impact on the treatment efficiency.We researched plants of the northern region which can be used in artificial wetland and pointed out that reasonable vegetation can be used to improve purification efficiency of wastewater.%人工湿地是一种高效、无动力的生化处理技术，可对比较难处理的有机废水进行深度处理可取得良好的处理效果，并且运行费用低，工艺简单。但其合理的植被设计会对处理效率产生的较大的影响。对北方地区可用于人工湿地的植物进行了分析研究，选择合理的植被可以提高水质净化效率。
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