The secondary vegetation is one of the typical and dominant vegetation type in Qiao Island, Zhuhai City, Guangdong Province. In this study, flora characteristics and family and genus areal types were investigated based on the recorded species of quadrat method. The quadrat method as well was applied to investigate the community characteristics and lifeform spectrum, and to analyze species diversity to reveal the typical characteristics of the secondary vegetation in Qiao Island. The result showed: (1) a total of 86 species of vascular plants belonging to 69 genera and 46 families were found in 15 quadrants. The geographical elements of the families and genera are both mainly composed of tropical and subtropical types. (2) The leaf characteristics presented as the dominant leaf type was single leaf whose percentage was 71.8%, the percentage of entire leaf (65.9%) was higher than that of nonentire leaf, and sclerophyll had a higher percentage (52.9%) among the leaf quality. The proportion of microphyll (45.3%) in research area of Qiao Island was significantly higher compared to that of its adjacent land regions, which tended to suggest the higher proportion of microphyll was one of the reasons to adapt to the dry habitats with the intensive lights in research area of Qiao Island. (3) Microphanerophytes (33.72%) and nanophanerophytes (23.26%) were predominant in life form, which was presumably influenced by both the manual intervention (introduced exotic plants for community construction) and the stage of vegetation succession. (4) Due to the sea wind and barren soil in Qiao Island, the species diversity of tree layer was lower than shrub layer and the ShannonWiener indexes in the study communities were low that was between 1.84 and 2.65, which indicate that the community was an immature one, and was in the intermediate phase of climax succession.