For the propose of the quality control of Torilis Fructus, one major compound was isolated by several column chromatograpies and identified by its spectral data as torilin (8,11-dihydroxy-8-angeloyl-11-acetyl-4-guaien-3-one). A quantitative analysis of torilin using HPLC method showed that the average contents at 230 and 254 nm were $7.167{pm}0.168mg/g;and;7.052{pm}0.160mg/g$, respectively, in 18 samples collected throughout the regions of Korea and China. This method provided a tool for standardization of the commercial Torilis Fructus.