Repeated closed mouth acne on the face is usually due to the oil secretion, epidermal keratinocytes are not timely shedding blocked in the hair follicles formed. Then the patient can through cleaning, oil control to promote metabolism, the correct use of medication, as well as good moisturizing and sunscreen and so on several aspects. 1. Clean, oil control and promote metabolism: for sensitive skin patients, it is recommended to use amino acid cleanser. For patients with oily skin and oily skin, you can use cleansing masks and cleansing items containing soap. It is recommended that patients choose acid-based skin care products, which can control oil, but also allow the surface of the dead skin to soften and fall off faster. 2. Correct medication: patients can use topical erythromycin isotretinoin gel and retinoic acid ointment to make improvements to closed mouth acne. 3. Do a good job of moisturizing and sunscreen: a good moisturizer can regulate the balance of oil and water on the face, and a good sunscreen can prevent the stimulation of ultraviolet rays. For the face of repeated long closed mouth acne patients, it is recommended to timely to the regular hospital for examination, under the guidance of a professional doctor for standardized treatment.