Population height, diameter breast height (DBH) and crown were studied in Cinnamomum burmannii population in Karst hills of Guilin, as well as their relationships. Differences in the height, DBH and crown of individuals of the population were determined by differentiation indices. Most individuals of the population were 2-8 m in height and 2-6 m in DBH. The crown sizes of most individuals were 1-4 m with a few of 5-7 m. The height, DBH and crown of C.burmannii individuals were found moderately differentiated. C.burmannii population consisted mainly of young trees with good regeneration, which is beneficial to complexity and stability of the population.