Abstract:In order to investigate enrichment effect of submerged plants on heavy metal pollution in sediment of Poyang Lake, four submerged plants, Myriophyllum spicatum L., Ceratophyllum demersum L., Vallisneria natans (Lour.) Hara and Potamogeton crispus L. were selected to conduct ecological tank planting experiments in sediment of Nanjishan wetlands and Le""an River to study heavy metal content and tolerance characteristics of the plants. The results show that submerged plants can effectively enrich heavy metals and show different resistance to heavy metal stress. Myriophyllum spicatum L. has high adsorption efficiency for Cu and Pb, Vallisneria natans (Lour.) Hara can be used as Cu stabilizer and has good resistance, Potamogeton crispus L. has good enrichment effect for Zn but poor resistance, easy to be stressed by heavy metals. This study can provide reference for phytoremediation of heavy metal contaminated sediment.