Acne is a chronic inflammatory disease of the sebaceous glands of the hair follicles and is somewhat disfiguring. There are various types of acne. Acne on the face can be common acne, but also medicated acne, premenstrual acne, convergent acne, cosmetic acne, etc. The treatment of acne can be divided into general treatment and medication, and other treatment methods. The principles of treatment are mainly lipid removal, dissolution of keratin, sterilization, anti-inflammation and regulation of hormone levels. 1. General treatment: In daily life, pay attention to washing your face with water and do a good job of cleaning your face, especially for cosmetic acne, carefully remove makeup after using cosmetics, try to use less oily cosmetics, and avoid squeezing acne with your hands. At the same time, you should avoid spicy and stimulating foods as much as possible, eat less high-fat and sugary foods, and eat more fresh vegetables, fruits and vitamin-rich foods. Pay attention to rest, reduce the frequency of staying up late, work and rest in moderation, and correct constipation. For medication acne, iodine, bromine drugs, etc. should be prohibited. 2.Medication: It can be divided into topical medication and systemic medication. Mild cases can be treated with topical medications only, such as retinoids, antibiotics, etc. Systemic drugs include antibiotics, isotretinoin, anti-hormonal drugs, glucocorticoids and so on. The use of medications should be in accordance with medical advice. In addition to the above methods, other treatments such as phototherapy (which works mainly to destroy Propionibacterium acnes and reduce inflammation) can also be used to treat acne.