To explore the community construction scheme of Benggang ecological restoration based on nature, four stands (Pinus elliottii, Eucalyptus urophylla, Acacia auriculaeformis, and Cinnamomum camphora)were studied for early restoration in Benggang area of Guangdong Sanlinshan National Forest Park. In terms of understory invasive and native species, we conducted the quadrat survey, analyzed the community stability of different stands through species diversity, niche width, niche overlap, ecological response and species association index, and optimized understory plant allocation. The results showed as follows. (1) There were 104 species of understory plants belonging to 51 families and 92 genera, among which Asteraceae had the most species (33 species), followed by Poaceae (24 species). The number of understory native species was Pinus elliottii>Eucalyptus urophylla>Cinnamomum camphora> Acacia auriculaeformis, and the number of understory invasive species was Pinus elliottii=Cinnamomum camphora>Acacia auriculaeformis>Eucalyptus urophylla. Compared with the other three stands, the number of species, diversity index, and niche width of understory invasive in Eucalyptus urophylla stand were the lowest, and the niche overlap between understory invasive plants and native plants was also the lowest. (2) The future development trend of the understory plant community was the best in Pinus elliottii stand, followed by Eucalyptus urophylla stand and Cinnamomum camphora stand,and the worst was Acacia auriculaeformis stand. The average rate of the positive development of Pinus elliottii stand, Eucalyptus urophylla stand, and Cinnamomum camphora stand was higher than the negative development, except for Acacia auriculaeformis stand. (3) The interspecific associations of the understory plants of the four stands were small (OI≤0.5), and most of them were negative associations, and the communities were in an unstable stage. The connection degree of native plants and invasive plants in Eucalyptus urophylla stand was the lowest, indicating that the competition degree was the least among understory plants. (4) The pattern of community allocation could be optimized as: Eucalyptus urophylla-Dicranopteris Dichotoma-Rottboellia Cochinchinensis -Miscanthus Sinensis; Pinus elliottii-Miscanthus Sinensis-Imperata Cylindrica-Blechnum Orientale; Acacia auriculaeformis-Miscanthus Sinensis-Blechnum Orientale-Rhodomyrtus Tomentosa; Cinnamomum camphora-Rhodomyrtus Tomentosa-Rottboellia Cochinchinensis-Imperata Cylindrica. Therefore, when planting fast-growing trees to rapidly afforest for early restoration in Benggang area, we can give priority to stands with abundant understory native plants and few understory invasive plants (such as Eucalyptus urophylla stand). Positive associated understory native plants can be selected for understory plant community allocation, so as to effectively resist understory invasive plants and form stable progressive understory plant community.