Acne is a chronic inflammatory skin disease involving the sebaceous glands of hair follicles. Its development is mainly related to androgens, increased sebum secretion, proliferation of Propionibacterium acnes, abnormal keratinization of the sebaceous ducts of hair follicles and genetics. 1, general treatment: First of all, we must adjust our mindset and maintain a positive and optimistic state; avoid spicy and stimulating foods and control fat and sugar foods, which can stimulate oil production and aggravate acne; eat more vegetables and fruits and vitamin-rich foods; moderate labor and correct constipation to keep the bowels open is important. Secondly, according to the skin type, choose the right facial cleanser. Excessive removal of oil and grease, resulting in damage to the skin barrier function, will also aggravate acne to a certain extent; do not use or use less ointment and powder cosmetics. Avoid squeezing and scratching acne with your hands. It is also very important to prohibit the use of bromine and iodine drugs. 2. Topical medication: Topical medications include retinoic acid drugs (retinoic acid cream or gel, adapalene gel, etc.), chloramphenicol alcohol, antibiotic ointments and herbal ointments for acne treatment. Attention should be paid to the stimulation reaction of drugs. 3, oral medications: (1) antibiotics: you can choose tetracyclines, macrolides (azithromycin, clarithromycin, roxithromycin, etc.), clindamycin, etc.. Antibiotics control inflammation quickly and effectively, but have no role in preventing recurrence. (2) Retinoic acid: Retinoids can reduce sebum secretion, control abnormal keratinization and acne formation, and are effective for moderate to severe acne. Vitamin A capsules can also be used to treat severe acne. Attention should be paid to the side effects of drugs. (3) Traditional Chinese medicine: mainly Chinese medicine, and may also be used to treat acne through Chinese medicine. (4) Others: Anti-androgen drugs (such as spironolactone and cimetidine) are generally not routinely used and are mainly used for severe cases; glucocorticoids are suitable for severe nodular, cystic and coalescent acne in the inflammatory phase and fulminant acne. 4.Other treatments: For open acne, you can choose acne squeezing and picking with herbal medicine or anti-inflammatory mask for treatment once a week. For inflammation of obvious lesions, helium-neon hormone and red and blue light treatment can be added; photodynamic therapy can kill Propionibacterium acnes and anti-inflammation, which is effective and also has the effect of preventing recurrence and is a good choice for the treatment of moderate to severe acne. Scarring is mainly treated with fractional laser and other treatments.