Acne is usually referred to as acne. A lot of acne on the back can be relieved by daily care and topical medication. 1. Daily care: light diet, usually reduce the intake of high sugar or greasy food, such as milk tea, cake, fat meat, etc., pay attention to avoid local moisture, sweat, shower, can use weak alkaline soap on the back to clean, can be localized to remove the excess oil of the skin. 2. Local medication: local topical vitamin A acid cream, benzoyl peroxide, adapalene gel and other drugs can play an anti-inflammatory role in regulating follicular keratinization; secondary bacterial infections, erythromycin cream, fusidic acid cream and other topical use. It is recommended that patients try not to scratch the affected area, to avoid leading to skin breakdown, triggering infection, the above drugs need to be used in accordance with the doctor’s instructions, do not self-medication.