[Objective] Investigating and analyzing Fagaceae community structure and dynamics in Malipo subtropical evergreen broad-leaved forest, is important for exploring the coexistence mechanism and dominance differences of Quercus, Lithocarpus and Castanopsis, and providing an empirical study for understanding coexistence of Fagaceae species. [Methods] 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 the mechanism for their coexistence. [Results] (1) The average basal area of Fagaceae and Lithocarpus were 57.04% and 32.82%, which makes 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 Deevey-Ⅱ type. The mortality of Quercus and Castanopsis species increased with increasing in diameter class, whearus after becoming saplings, Lithocarpus species become stablized. [Conclusion] Fagaceae, especially Lithocarpus was the dominant group in the Malipo subtropical evergreen broad-leaved forests. The differentiation in characteristics of community dynamics, species distribution and diversity among three genera are important causes for their coexistence and differentiation in dominance.