Acne is a common manifestation of adolescence, mostly between the ages of 12 and 20, and its presence is closely related to high sebum production, the duration of which varies from person to person. Some of them will subside with the end of puberty, but there are also cases that do not subside. Patients can be treated with topical clindamycin gel and other drugs for anti-inflammatory treatment. If the symptoms do not improve after 1-2 weeks of medication, it is recommended to visit the hospital dermatology department immediately. In addition to medication, patients also need to pay attention to dietary management, avoid spicy, greasy and stimulating food, eat more fresh fruits and vegetables, light diet, as well as pay attention to facial cleanliness, and maintain sufficient sleep.