Calamus, belonging to the Araceae family and the Acorus genus, is a perennial herbaceous plant in the form of grass. It is distributed in various parts of northern and southern China, including α-、β- Asarone, cis methyl isoeugenol, methyl eugenol, calamendiol, acornone, hyobunone, acorone, acoragermacrone, acolamone, isoacolamone, etc.