Abstract: In order to identify different volatile substances and components of Toona sinensis, in this study, using Toona sinensis in Qujing Area as the experimental material, the volatile components of Toona sinensis were determined by headspace solid phase microextraction and classified. The results showed that a total of 27 volatile substances were detected by classifying the volatile substances measured, namely alkanes, terpenes, esters, sulfur-containing compounds and thiophenes; The volatile substance components of early maturing Toona sinensis in Qujing Area were mainly composed of terpenes, while the substances that make toon have a specific odor were 2-mercapto-3, 4-dimethyl-2, 3-dihydrothiophene with the taste of boiled toon, with onions, sulfur flavors 2, 4-dimethylthiophene and 3, 4-dimethylthiophene, which provide a theoretical basis for the study of the main volatile substance components of early maturing farmhouse toon.