Abstract: A systematic vegetation survey was conducted in Malingshan Mount Forest Park in Xinyi Municipality of Jiangsu Province by means of the typical plot sampling method. The results showed that there were 298 species of seed plants, belonging to 246 genera of 106 families. 5 types of forest communities were divided according to the composition of dominant species, i.e., Pinus densiflora × Robinia pseudoacacia community, Broussonetia papyrifera community, Placladus orientalis plantation community, Quercus acutissima × Platycladus orientalis community, and bamboo forest community. There were certain differences inspecies richness and species diversity among the plant communities. The values of Simpson index (D) and ShannonWiener index (H′) of Broussonetia papyrifera forest community were higher than those of other communities. The indexes of species richness, species diversity of Placladus orientalis plantation community and bamboo plantation were lower, which showed the characteristics of simple composition, simple structure, and poor growth status. Some suggestions were put forward for stand transformation according to the local conditions in order to improve the stability of the forest communities.