Investigating and analyzing the structure and dynamics of Fagaceae community in the subtropical evergreen broad-leaved forest of Malipo is important for exploring the coexistence mechanism and dominance of Quercus Lithocarpus and Castanopsis This study provided an empirical study for understanding Fagaceae coexistence We set four 600 m² plots in the Malipo natural reserve in May 2021 Excel 2019 and SPSS 25 0 software were used to analyze the dominant group by both individual number and basal area and make static life table and survival curve to understand the differentiation among different genera and their coexistence mechanisms 1 The average basal area of Fagaceae and Lithocarpus were 57 04% and 32 82% which made them the dominant family and genera respectively 2 The diameter class distribution of the three genera was all barrel-shaped with small proportion of seedlings and large trees 17 43% and large proportion of small- and middle-sized trees 82 57% 3 The survival curves of the three genera all fitted the Deevey-Ⅱ type The mortality of Quercus and Castanopsis species was increased with increasing in diameter class whereas after becoming saplings Lithocarpus species become stablized Fagaceae especially Lithocarpus is the dominant group in the evergreen broad-leaved forests of Malipo The differentiation in community dynamics species distribution and diversity among these three genera are important reasons for their coexistence and dominance