Taking two different representative batches (A, B) of the domestic commercial cigarette brand M as raw materials. A static headspace-GC/MS method was established and the datas were collected by the MES automatic control system. Aroma components in two batches of tobacco samples (A and B) were determined. RESULTS A total of 40 core aroma components were detected in two batches of finished cut tobacco, of which batch A contained 34 and batch B contained 37; 3-methyl-1-butanol, 2,6-dimethyl Pyridazine, n-hexadecane, 2-acetylfuran, 2-hexen-1-ol, cis-4-heptenal are undetected components in A, 2-methylpyrazine, isoprene Enol and 2-acetylpyrrole were undetected components in B; the relative total content of aroma substances in B was less than that of aroma substances in sample A, and controlling the temperature of the regain zone at 60 ℃ was favorable to retain the aroma components in the tobacco.