Abstract:Four chemical constituents were isolated from the stems and leaves of Illicium dunnianum: β-sitosterol (Ⅰ), 1-triacontanal(Ⅱ), quercitrin (Ⅲ) and shikimic acid(Ⅳ), and identified on the basis of spectral analysis. Pharmacological experiments have shown that shikimic acid possesses analgesic activties.