Rosemary (Rosmarinus oficinalis L.) also known as oil anemone, is a genus of salvia in the labiaceae family and small evergreen shrub, native to Europe, north Africa and the Mediterranean coast, in recent years in China's Yunnan, Guangxi, Hainan, Hunan, Sichuan, Guizhou, Fujian and other provinces and regions have been planted. Rosemary is a kind of multi-purpose cash crop from which antioxidant and rosemary essential oil can be extracted.The main components of antioxidants are diterpenoids, flavonoids, triterpenoids and other compounds with antioxidant function.