Basil is an annual herbaceous plant of the genus Ocimum, with hairy stems, leaves, and flowers. Basil is native to tropical Asia, Africa, and Pacific islands. The stems, leaves and flower spikes of basil contain aromatic oil, which is mainly used as flavoring materials. It can be used to make cosmetics, soaps and edible essence, and also used as a taste modifier in toothpaste and mouthwash; The tender leaves are edible and can also be brewed into tea for drinking. Basil can be used as medicine in its entirety. According to the "Qian Jin Fang", basil is mainly used for treating external headaches, bloating and qi stagnation, epigastric pain, diarrhea, menstrual disorders, injuries from falls, snake and insect bites, skin wet sores, itching and other diseases; Seeds can cure eye fog. In India, basil is regarded as a sacred herb by Indians, a grace bestowed upon humanity by the gods. They believe that wearing basil leaves can ward off evil spirits.