Abstract: This paper shows the chemical constituents of the essential oils from the flowers of Aglaia odorata Lour. By applying gas-liquid chromatography, TLC, IR, UV, MS and NMR, the following 21 components have been separated and identified: hendecane, linalool, decyladehyde, copaene, β-caryophyllend, β-humulene, β-elemene, β-selinene, humuladienone, humulene epoxide Ⅰ, tridecanic acid methyl ester, β-humulene-7-ol, β-humu- lene-7-ol acetate, juniper camphor, heptadecane, khusol acetate, oetadecane, nonadecane, eicosane, heneicosane and docosane, among which β-humnlene-7-ol is expressive of a graceful odor of Aglaia odorata. In addition, the content of the various chemical components of the said oils produced in Zhangzhou, Fushou and Chongqing has been determined.