Adolescent children with lots of acne on their backs can be treated with medication as well as daily care interventions. During puberty, due to the development of the body, the secretion of androgens is exuberant, causing excessive secretion of oil from the sebaceous glands, and the infection of Propionibacterium acnes leads to the occurrence of acne. Generally, with age, the hormone level in the body tends to stabilize and can subside on its own. If it affects your daily life, you can use Vitamin A acid, benzoyl peroxide and other medications for topical application, and if the symptoms are serious, you can also take Vitamin A acid, doxycycline and other medications. Daily attention should be paid to skin care, regular cleansing, reduce the skin surface oil, develop good habits, diet to light, avoid spicy food stimulation, go to bed early and get up early, avoid staying up late. Please follow the doctor’s instructions for medication.