In order to modelize the pretreatment procedure of the cyanide-free apricot seed oil, the conditions of crushing, frying, drying and steaming were investigated. Hydrogen cyanide was formed in the crushed seed at wide temperature range of $5{sim}70^{circ}C$, and the highest formation temperature was $40^{circ}C$. The cyanide content in the crushed seeds incubated 5 and $40^{circ}C$ for 96 hours was 200 and $780{mu}g/g$ respectively, however the cyanide contained small amount in the non-crushed seeds. Consequently, emulsin inactivaton procedure was required for the preparation of cyanide-free oil. Steaming for 15 min. was the most desirable pretreatment procedure for the cyanide-free apricot seed oil. But oil production from the steamed seeds was lower than those from frying.