methylthiopropanol in Sesame-Flavor Liquor was analyzed by gas chromatography-flame photometric detector (GC-FPD) in this study. The wine was concentrated 50 times and extracted by dichloromethane for sample pretreatment. The chromatographic condition carried out that:polar chromatogra-phic column DB-FFAP (60m×0.25mm×0.25μm), programmed temperature, inlet temperature 260℃, detector temperature 200℃. External standardmethod was adopted. The results showed that with the concentration of 5-100mg/L of 3-methylthiopropanol the linear correlation coefficient( R² ) was 0.9913, LOD was 2.5mg/L, LOQ was 5mg/L, while with the level of 8,30,80mg/L recovery rates were between 84.3% to 89.7%, R.S.D. ranged from 3.7% to 4.6%. Five major Sesame Flavor Liquor corporations and 18 samples were inspected. The 3-methylthiopropanol couldn't be detected in commercial wines including the corporation of Ⅰ and Ⅲ, original wines such as Ⅰ, Ⅱ, Ⅲ and Ⅴ. While the concentration of 3-methylthiopropanol in the commercial wines of Ⅱ-a, Ⅱ-b, Ⅱ-c, Ⅱ-d and Ⅴ-a were 1.03,0.35,0.80,0.67,0.18mg/L, respectively. In the corporation of Ⅳ original wine and commercial wine, its concentration were all below 0.1mg/L.