As the food material, the clerodeudrou trichotomum thunb leaves have rich nutrient components and precious herb values. The essential oil from the Clerodeudrou trichotomum Thunb leaves was extracted by steam distillation and analyzed by GC -MS technique. 20 compounds whose relative mass fraction is greater than 0.50% were identified, accounting for 99.57% of the essential oil. The main constituent of the essential oil is 1-Octen-3-ol （ 38.17% ）, the other main constituents are Linalool （11.73%）, Benzothiazole （9.41%） , 5 - Methyl - furfural （ 6. 85% ） , Terpineol （ 6. 79% ） ,3 - Hexen - 1 - ol （5.49%）, Benzene acetaldehyde （4. 01% ）, 2 - Hexenol （ 2. 93% ）, 2 - Aeetyl - 4 - methylphenol （2.65%） and 1-Hexanol （2.24%） ,respectively.