Acne is a chronic inflammatory disease involving the hair follicle and sebaceous gland, which has certain disfigurement. All ages can suffer from the disease, but most of them are teenagers. The incidence of acne is mainly related to the increase of androgen and sebum secretion, abnormal keratinization of hair follicles and sebaceous gland openings, and propionibacterium acnes infection. Some cases are also related to genetic, immune and endocrine disorders. In addition, the irrational diet structure, such as eating spicy, high fat, high calorie, high sugar diet, improper use of cosmetics and skin care products, mental tension, anxiety, etc., can induce or exacerbate the disease.