Objective: To determine the constituents of the volatile oil from bulbs

stems and leaves

styles and fibrous roots of Allium victorialis

so as to provide reference for studying the effective components on different parts of A. victorialis. Method: The volatile oil was extracted from 4 parts by using headspace solid phase microextraction (HS-SPME)

and then analyzed by gas chromatography mass spectrometry (GC-MS). The relative content of each component was determined by chromatographic peak area normalization. Result: A total of 179 volatile compounds were isolated from the four parts of the A. victorialis

including 12 common compounds. Among them

57 compounds

like methyl allyl disulfide

diallyl disulfide and dimethyl disulfide in bulbs

were identified

and the relative content was 98.84%. Among them

48 compounds

like 1

3-dithiane

2-hexenal and dimethyl disulfide in stems and leaves

were identified

and the relative content was 97.36%. Eighty-two components

such as 1

3-dithiane and dimethyl disulfide in styles

were identified

and the relative content was 92.90%. Fifty-one components

like dimethyl disulfide

1

3-dithiane and dimethyl trisulfide

were identified in the roots

and the relative content was 85.89%. Conclusion: The components of volatile oil are mainly sulfur compounds. Bulb has the largest content of sulfur compounds

accounting for 79.75% of the total content.