Abstract: Ecological floating bed technology has been used to improve water quality and recover the contaminated water. Among this experiment, the water quality of Quanzhou Shanmei Reservoir has been improved by growing vetiver grass, canna, Pontederia and water spinach in the landscape ecological floating bed which has been researched and developed independently. The results show that the four plants could adapt to the water environment of Shanmei Reservoir, among which vetiver grass could remove the nitrogen and phosphorus perfectly compared with the poor ability of removing for water spinach while there is little difference in removing capacity between canna and Pontederia.