Acne marks are post-inflammatory hyperpigmentation of acne, which can be treated with daily protection, topical medication and chemical peeling. 1. Daily protection: Because ultraviolet rays can aggravate hyperpigmentation, patients need to pay attention to daily sunscreen, sunscreen clothing or sunscreen can be done daily sunscreen; in addition to avoid scratching, friction, and other mechanical injuries to the lesion area. 2. Topical medication: topical retinoic acid drugs and azelaic acid, topical retinoic acid drugs and azelaic acid can accelerate the over-pigmentation of post-inflammatory recession, which is irritating, so it is necessary to gradually build up tolerance. 3. Superficial chemical exfoliation: chemical exfoliation using fruit acid and salicylic acid is equally effective. Strict daily sun protection and moisturizing and hydration are essential before, during and after the peeling treatment. The above medications and treatments should be carried out under the guidance of dermatology specialists in regular hospitals, and it is recommended to consult a doctor in a timely manner and follow the doctor’s instructions.