Objective: To analyze the chemical constituents of volatile oil from Zelkova schneideriana leaves with GC-MS technology. Method: The volatile oil was extracted from the leaves by steamdistillation. The constituents of volatile oil were identified by GC-MS technology. Result: Relative content of volatile oil was determined by peak area normalization. Totally 64 compounds were identified

accounting for 71.06% of the total volatile oil content. The principal chemical constituents of the essential oils were ethyl propionate (3.61%)

butyl acetate (8.28%)

trans-2-hexenal (1.66%)

N-propylbenzene (1.46%)

4-ethyltoluene (6.18%)

trimethylbenzene (5.61%)

linalool (1.09%)

6-methyl-3

5-hep-tadien-2-one (1.43%)

geranyl acetone (1.43%)

beta-ionone (1.12%)

palmitaldehyde (1.25%)

myristicacid (1.07%)

farnesyl acetone (1.89%)

dibutyl phthalate (10.82%)

phytol (5.72%). Conclusion: The results provide reliable experimental data and theoretical basis for the further development and utilization of Zelkova schneideriana leaves.