Abstract: In the modern life, the park green space plays an important role in the urban environment and development.In order to master the garden plant disposition pattern, plant community structure and species diversity of Beichen Park in Ankang City was selected as the object to carry out investigation and research.Through field investigation, we calculated and analyzed a large amount of plant data, and counted the important value, richness index and diversity index of each plant.The results showed that there were 56 species, 52 genera and 36 families of garden plants in Beichen Park.The first three important values of tree layer were Cinnamomum camphora,Magnolia grandiflora and Osmanthus fragrans.The first three important values of shrub layer were Pittosporum tobira,Ligustrum lucidum and Gardenia jasminoides.The most important value of the herb layer was Cynodon dactylon.The species richness index and diversity index of arbor layer were the highest, and those of herb layer were the lowest.The plant community and landscape of Beichen Park were well arranged, but the shortage was that there were few herbaceous plant species, the plant community mostly uses native tree species, and the exotic tree species were seldom planted.It is suggested to increase the planting of exotic tree species which are feasible through long-term test.