Abstract:The yield and chemical compositions of essential oils of five origin of Torreya grandis cv. Merrillii prepared from fresh aril by hydro-distillation were determined and compared. The results showed that the Panan Torreya grandis cv. Merrilli had the highest yield of the essential oil (3.89±0.03)%, followed by the Zhuji, Shengzhou I and Shengshou II (2.08% to 2.21%), the Huangshan Torreya grandis cv. Merrilli Aril had the lowest yield of the essential oil (1.21±0.01)%. The volatile organic components were measured by GC-MS, and 53, 57, 63, 57, 56 components were identified in essential oils from Shengshou II, Zhuji, Shengzhou I, Panan and Huangshan, respectively. The main components were alpha-Pinene, beta-Pinene, Myrcene, Limonene, Terpinolene, Germacrene D, alpha-Caryophyllene and delta-Caryophyllene, which total relative contents were 81.58%, 86.52%, 30.64%, 77.86%, 44.08%, following the above order. The Limonene in essential oils from Panan and Shengshou II was more than 30%, and α-pinene, laurylene were followed. However, the Limonene was less than 18% in essential oils from Huangshan and Shengzhou I, and Germacrene D, delta-Caryophyllene were more less. These compounds belong to olefin, alcohol, aldoketones, Carboxylic acid esters, in which olefin compounds were the highest (almost 90%), and aldoketones was the lowest (less than 0.1%). The origin of Torreya grandis cv. Merrillii only influence its alcohol concentration, Shengzhou I (11.4%) was the most, then were Shengshou II (1.28%), Zhuji (3.72%), Panan (0.55%) and Huangshan (5.96%).