Objective To make a comparative analysis of volatile oil constituents extracted from tender leaf of Pistacia chinensis Bunge with supercritical CO2 extraction and steam distillation. Methods The supercritical CO2 extraction and steam distillation methods were used to extract the volatile oil from tender leaf of Pistacia chinensis Bunge and their constituents were determined by GC-MS. Results The constituents extracted by supercritical CO2 extracts and steam distillation showed obvious difference, 18 and 24 kinds of volatile oil were determined,...