Representative populations play an innegligible role in ecological early warning and biodiversity conservation1.The assessment of endangered species is the key basis for the priority conservation of biodiversity,analysis on the distribution pattern of representative populations from the perspective of suitable survival area.The results showed that:1)There were 10~25 species of representative populations potentially distributed in most areas of the National Park of Hainan Tropical Rainforest,accounting for 83.86% of the total area.2)The distribution of representative populations was mainly affected by altitude and vegetation type.The overall number of species distribution showd a radiation state of decreasing distribution from high altitude to low altitude,from primary forest to secondary forest and plantation.3)The construction of the National Park of Hainan Tropical Rainforest already opened up the boundary between the original protected areas and greatly promoted the interconnection of the ecosystem.However,there were still large areas of high hotspots of endangered plants that have not been included in the core protected areas.Therefore,more attention should be paid to these areas.The survival status of representative populations directly reflected the current characteristics of tropical rainforest ecosystems to a large extent.The research results can provide reference and theoretical basis for the ecological planning and biodiversity protection of the National Park of Hainan Tropical Rainforest.