The presence of growth rings on tropical tree species is proven. In addition, the data on tree growth rhythms are fragmentary for many commercial tree species in the Congo Basin, and several studies question the dendrometric parameter values provided by the forest administration, parameters generally from permanent sample plots. In this study, we have evaluated the potential of tree-rings analysis in the semi-deciduous rainforest in Central Africa. For this, we examined the anatomy of wood of nine tree species to determine the visibility of tree rings and, on the subset of four species whose tree rings are visible, the potential of cross-dating has been evaluated as well as the annual character of formation by tree- rings analysis on stem discs. The age of trees is obtained for each of these tree species: E. cylindricum; M. Altissima; M. Excelsa and T. scleroxylon respectively (137, 126, 87 and 67). And the respective annual diametrical increases of (0.68 ± 0.42; 0, 71 ± 0.31; 0.64 ± 0.29 and 1.02 ± 0.19 cm.an). The comparison of these values to that of the Cameroonian forest administration shows that the latter is higher: 0.5 cm. an E. cylindricum, M. Altissima, M. Excelsa and 0.9 cm.an for T. scleroxylon. This method can be applied to other distinct and annual commercial tree species with distinct and annual tree rings to provide new data and fill the knowledge deficit on the growth rates of tropical trees.