Abstract: Nectar plants have great potential use value, and they are also important components of urban ecosystem. In order to identify the diversity of nectar plant species in the area and the important functions in ecosystem construction, we carried out extensive field work and analysis on the diversity of nectar plant species of Haizhu National Wetland Park of Guangzhou City. A total of 71 species of nectar plants were recorded, belonging to 48 genera and 61 families. Among them, there were 11 species (belonging to 9 families 10 genera) of major nectar plants, and 60 species (39 families 51 genera) of auxiliary nectar plants. At the families level, Rosaceae (7 species) and Myrtaceae (6 species) were the dominant components. The results showed that there was no significant difference in the distribution of main nectar plants in different seasons based on the different flowering periods in four seasons. However, the auxiliary nectar plants were mainly distributed in spring and summer, both accounting for 43.33% of the total auxiliary nectar plants species. In terms of life form, the main nectar plants were mainly arbors, including 8 species of arbors, 2 species of herbs and 1 species of vine. Among the auxiliary nectar plants, there were 30 species of trees (50.0% of the total auxiliary nectar plants species), 7 species of shrubs (11.67%), 17 species of herbs (28.33%), and 6 species of vines (10.0%). It was suggested that 1 genus and 27 species of commonly distributed local of nectar plants should be added to this wetland park, and 6 configuration modes of plant community dominated by nectar plants were constructed based on the local zonal plant community structure. The results will be benifit for the conservation and sustainable utilization of urban biodiversity in this area.