Medicinal chrysanthemums are categorized by flower color and divided into white chrysanthemums and yellow chrysanthemums, both of which can evacuate wind-heat, clear away heat and detoxify the toxins, and calm liver-yang, but white chrysanthemums are good at clearing the liver and improving eyesight, while yellow chrysanthemums are good at evacuating wind-heat. Chrysanthemum is mainly produced in Anhui, Zhejiang, Sichuan and Hunan. Chrysanthemum can be divided into Chu chrysanthemum, Hao chrysanthemum, Hang chrysanthemum and Gong chrysanthemum according to the different processing methods and places of origin, of which Chu chrysanthemum and Hao chrysanthemum are of the best quality. For medicinal use, they are divided into white chrysanthemums and yellow chrysanthemums according to the color of the flowers. Chrysanthemum can treat headache and dizziness, redness and swelling of the eyes, blurred eyes caused by wind-heat colds or hyperactivity of liver yang at the beginning of a warm disease (liver yang is excessive, causing dizziness, dizziness, headache and other symptoms), as well as sores, carbuncles and swollen poisons. Yellow chrysanthemum is better for dispersing wind-heat, while white chrysanthemum is better for clearing the liver and improving eyesight. In addition, wild chrysanthemum has the best efficacy in dispersing canker sores and clearing away heat and toxins. If the above symptoms occur, do not use chrysanthemum to treat them by yourself, but consult a doctor in time.