Objective：To extract and identify the chemical constituents in the roots and stems of Tabernaernontana divaricata. Methods： The solvent extraction approach and silica column chromatography were used for separation of the chemical constituents, and their structures were identified by physicochemical properties and spectra analysis. Results： Seven compounds were isolated and their structures were identified as α-amyrin （1）, α-amyrin acetate （2）, α-amyryl octadecanoate（3）, taraxasterol acetate （4）, calycosin （5）, formononetin （6） ,and farnisin （7）. Conclusion： Compound 1, 3, 4, 5, 6 and 7 are isolated from this plant for the first time, and Compound 3, 4, 5, 6 and 7 are isolated from Tabernaemontan genus for the first time