The study on the constructed wetland plant species and their resistance is the key to ecologi-cal wastewater treatment technology. The study on the correlation between physiological and biochemi-cal indexes of constructed wetland plants by wastewater duress and wastewater residence time and the anti-stress capability of constructed wetland plants can provide theoretical basis and technical support for constructed wetland plant material selection. The effects are studied on the content changes of chlo-rophyll , soluble protein and MDA in 4 common plants in Shandong ( Phragmites communis, Typha ori-entalis,Arundo donax,Canna generalis) in different wastewater residence time (2 days,4 days and 6 days) ,and the correlation is also studied between the content changes and wastewater residence time. The results show; as wastewater residence time increases, chlorophyll content change in Phragmites communis is positively related to wastewater residence time, while that in Typha orientalis is negatively related to wastewater residence time; chlorophyll contents in Arundo donax and Canna generalis show no obvious correlation with wastewater residence time. Soluble protein contents in 4 plants all show a negative correlation with wastewater residence time. MDA contents in 4 plants all show a positive cor-relation with wastewater residence time.%人工湿地植物种类及其抗性研究是人工湿地生态处理技术的关键所在.对人工湿地植物受污水胁迫生理生化指标与污水停留时间相关性的研究,探讨人工湿地植物耐污水胁迫能力的强弱,可为人工湿地植物材料选择提供理论依据和技术支撑.试验研究了污水胁迫不同时间(2d、4d、6d)对芦苇、香蒲、芦竹和美人蕉4种山东地区常见的人工湿地植物的叶绿素、可溶性蛋白和MDA含量变化及相关性的影响效果.结果表明:随着污水胁迫天数的增加,芦苇叶绿素含量的变化与污水胁迫时间呈正相关、香蒲呈负相关,芦竹和美人蕉的叶绿素含量与污水胁迫时间未呈现明显的相关性；植物可溶性蛋白的含量与污水胁迫时间均呈负性相关；MDA的含量与污水胁迫时间均呈正性相关.
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