The Korean origin edible oil sterol part of the rape, sesame and perilla oil can be separated from the other constituents of the non-saponifiable fraction, by the thin layer chromatography on the preparative Plates. The composition of sterols have been determined by gas liquid chromatography and thin layer chromatographic anlysis. Two sterols, ${eta}$-sitosterol and campesterol were present in all of the oils. And brassicasterol were found in rapeseed oil in addition to the two sterols that were common to all of the oils studied. It was noted that ${eta}$-sitosterol was the major sterol in the Korean original edible oils. The results showed that contents of sterols were campesterol 24.31%, ${eta}$-sitosterol 58.90% ana Brassicasterol 11.54%, and $Delta^7$-sterol 5.25% by method of triangulation and campesterol 26.16%, ${eta}$-sitosterol 57.50%, brassicasterol 11.70% and ${Delta}^7$-sterol 4.64% by method of Planimetry of rape seed oil. By sesame seed oil sterol compositions were campesterol 20.35%, stigmasterol 9.15%, ${eta}$-sitosterol 43.49%, ${Delta}^7$-sterol 11.25% and others 15.76% by method of triangulation and campesterol 16.79%, stigmasterol 8.69%, ${eta}$-sitosterol 44.58%, ${Delta}^7$-sterol 14.28% and others 15.56% by method of planimetry. Campesterol 12.45%, stigmasteriol 5.40%, ${eta}$-sitosterol 72.32% and ${Delta}^7$-Sterol 9.83% by method of triangulation-and campesterol 13.00%, stigmasterol 3.76%, ${eta}$-sitosterol 74.57% and ${Delta}^7$ sterols 8.67% by method of planimetry of perilla oil. Contents of totalsterol in Korean edible oils were 0.82% by rape, 0.58% by sesame and 0.45% by perilla, respectively.