Abstract: The community characteristics using 101 samplings of green area community in the urban district of Shanghai were analyzed. The community diversity of deciduous broadleaved forest were high. The second was the communities of evergreen broadleaved forest. The structure of community was characterized by monotonous species, simplicity and high density of new-constructed community. Exotic plants occupied considerable percentage of the species composition while the flora reflected the zonal character. some advice, e.g. improving site condition by engineering technology to enlarge the scope of optional species, and classifying those plants into different functional types for community structure and landscape was suggested. Using this classification, we could construct urban community with better ecological function and landscape.