Regarding the research on the chemical composition of Perilla Seed Oil, many countries such as Japan, the former Soviet Union, the United States and Spain have carried out in-depth discussions in the world, and there are also some domestic research reports, all pointing out that the active ingredient of Perilla Seed Oil is mainly perilla aldehyde. There is also a small amount of limonene and α-pinene. GC-MS analysis of the chemical components of perilla leaf essential oil in China showed that perilla aldehyde was not contained in perilla leaf, but perillone content was high. Baisu does not contain perillaldehyde, but contains perillone. The research on the chemical composition of Perilla Seed Oil collected in Hubei Provincial Traditional Chinese Medicine Company showed that the main chemical composition in the essential oil was methyl perilla ketone, and no perilla aldehyde and aldehyde compounds were detected. A total of 120 peaks were produced on 36 samples of fresh perilla leaves, with an average of 45 peaks, and 29 components were isolated and identified. The main components were perillaldehyde, dill apierole, carrageenone, and perillone. Perilla stems and leaves contain 0.1% to 0.2% volatile oil. The oil contains 40% to 55% of L-perillaldehyde (the main component of perilla aroma), 20% to 30% of L-perillene, 0.5% of threenone, and α-pinene, β-pinene, citric acid, and arrowroot. Cydrin, camphene, menthol, menthone, aromatic alcohol, perillyl alcohol, dihydroperillyl alcohol, eugenol, elemin, β-furanone, isoperillone, etc. Extraction of volatile oil by steam method: 0.25% of leaves, 0.08% of stems, and 0.15% of fruits. 66 compounds were identified by GC-MS analysis, 13 with content ≥1%, including monoterpenes, sesquiterpenes, alcohols, aldehydes, ketones, acids and other components. Among them, there are 50 kinds of perilla leaves, and 9 kinds with content ≥ 1%. Mainly perillaldehyde 11.45%, β-syringene 18.95%, limonene 11.25%. The leaves and flowers of Beijing Baisu are taken in stages, and the yellow aromatic volatile oil is obtained by steam distillation. 40 compounds were identified by GC-MS analysis, and 15 compounds were obtained with the content ≥ 1%. Among them, there are 29 kinds of leaves, and the content of 10 kinds is ≥1%. The main components in the vegetative phase are perillone, isoperillone, perillaldehyde, β-syringene, α-trans-bergamotene.