Acne is a normal physiological phenomenon during adolescent development. The main causes of acne are: 1) Genetic factors; 2) Excessive secretion of sebaceous glands during puberty; 3) Keratinization of the hair perimeter; 4) Acne vulgaris infection; 5) Excessive androgens. Based on the above reasons, you should pay attention to several points: 1, avoid staying up late; 2, pay attention to diet, less greasy, spicy and stimulating food and sweet food; 3, pay attention to clean skin; 4, keep bowel movements smooth. Next, with the treatment, you can take oral vitamin capsules, azithromycin, vitamin B complex, etc., and topical oxyfluoxacin gel. If the heavier through the above treatment is still not good, it is best to come to the hospital for consultation.