Abstract: The present work is a part of the chemical investigations on the essential oils of Lauraceae family from Yunnan, and only the chemical constituents of Cinnamomum glanduliferum Meissn and Cinnamomum bodinieri Lévl are reported here. C. glanduliferum Meissn is widely distributed in the northern part of Yunnan. The essential oils derived from this camphor tree appear to be quite different in properties and compositions, according to different localities where the samples are collected. The chemical constituents listed here are the work done on an essential oil derived from a species collected at Koutung, Song-ming, Yunnan. Yield of oil (from fresh leaves) 0.5%; d₂₅²⁵ 0.8890; n_D²⁵ 1.4732; α_D²⁵ -19.15°; aldehyde and ketone content (bisulphite method) 27.2%. The following compounds have been identified in the oil: camphene, α-pinene, p-cymene, linalool, α-terpineol, d-camphor, citral, n-decylaldehyde, methylheptenone, cineole, and eugenol. The essential oils derived from C. bodinieri Levl have been observed to be several different types of constituents in the authors' laboratory. The present report is the findings on an essential oil, which chiefly consists of safrole. Yield of oil (from stem) 0.53—1.7%; d₂₅²⁵ 1.0700; n_D²⁵ 1.5275; α_D²⁵-0.85°; safrole content 84%. The chemical compounds besides safrole are camphene, α-pinene, dl-limonene, linalool, (α-terpineol, d-camphor, citral, methylheptenone, cineole, eugenol, and a sesquiterpene of the cadalene series.