Through the research on the trees’ phytoextraction of heavy metals in the soil of South China, the results were as follows: the content of different heavy metals such as Pb, Cd, Hg, As differed widely in same tree’s leaves, and that of the same element also differed in different trees. The content of heavy metals in the leaves usually went up as environmental pollution increased, so the heavy metals’ content of the trees in downtown area was more than that in suburb areas. The mean contents of Pb, Cd, Hg, As in downtown area were increased by 62%, 103%, 187%, 104% respectively than those in suburb areas. It also showed that Ficus beniamina ’Exotica’, F. religiosa, Delonix regia, Araucaria cunninghamii had the phytoextraction of Pb, Cd, Hg, As respectively, thus planting these trees could be a good way to remedy the heavy metal pollution. Bauhinia variegata, Araucaria cunninghamii, F. altissima, F. microcarpa could be used to monitor the pollution of heavy metal as a result of their sensitivity to Pb, Cd, Hg, As respectively. Thus it is significant for rational planting sensitive trees and hyperaccumulating trees in urban afforestation and other ecological construction, which can monitor and repair heavy metal pollution.