Turmeric (scientific name: Curcuma longa L.) is a perennial herb of the ginger family, genus Turmeric. It can be used both for medicinal purposes and as a food seasoning. Distributed in Taiwan, Fujian, Guangdong, Guangxi, Yunnan, Tibet and other provinces and regions of China; widely cultivated in East and Southeast Asia. It prefers sunny places. The rhizomes of both this species and tulip are a commercial source of the traditional Chinese medicine "turmeric" for medicinal use, which is able to move qi and break blood stasis, clearing menstruation and relieving pain. It can move qi, break blood stasis, and clear the channels of menstruation to relieve pain. It is used for treating chest and abdominal distension, shoulder and arm paralysis, menstrual disorders, amenorrhoea and bruises. It can also be used to extract yellow food dye; the curcumin contained in it can be used as an analytical chemical reagent. Curcumin is a chemical component extracted from the rhizomes of some plants in the ginger family and Tennessee family, it is a rare pigment with diketone in the plant world, it is a diketone compound, orange-yellow crystalline powder with a slightly bitter taste, almost insoluble in water. The main ingredient is a mixture of three main components: curcumin, mono demethoxy curcumin and bis demethoxy curcumin.