Abstract: 【Objective】The objective of this study was to construct more suitable biomass models for urban greening tree species, and to discuss the relationship between the wood density and diameter at breast height(DBH). We expect that the study will improve methods of estimating biomass of greening trees in Shanghai.【Method】Elaeocarpus decipiens, Ligustrum lucidum,Koelreuteria bipinnata, and Sapindus mukorossi were selected to analyze the variation in their wood densities, and to fit their allometric biomass models to the form of Y=aX^b. Moreover, we compiled published aboveground biomass models of nine common greening trees in Shanghai, and compared these to our results.【Result】The wood density of Elaeocarpus decipiens was significantly lower than those of the other species, and wood density had no apparent correlation with DBH, which suggested that wood density can be ignored when fitting single species biomass models. The allometric models generally fitted the data well, and the values of coefficients a and b varied among species and organs.The coefficient b values of evergreen broad-leaved trees were significantly lower than those of deciduous broad-leaved trees. The published models yielded different biomass estimationsthan ours, especially for large trees.【Conclusion】Suitable allometric models should be selected for estimating tree biomass in urban green areas according to specific conditions, especially the intensity of greening management.