Acne left behind acne marks, consider and inflammation of the skin pigmentation related, can be relieved through general treatment, drug therapy, physical therapy and other ways. 1. General treatment: for the acne color sedimentation, most of the time will be with the passage of time, and thus subside on their own, so there is no need for special treatment, waiting for its own improvement can be, during the period of attention to sunscreen, avoid staying up late to accelerate the skin’s metabolism. 2. medication: for acne left behind acne marks, patients can use retinoic acid cream, hydroquinone cream, etc., so as to promote the renewal of epidermal cells, reduce local melanin precipitation. 3. Physical therapy: patients can also be through the way of laser, so as to directly act on the subcutaneous precipitation of melanin, selective photothermal effect, so as to achieve the effect of lightening the pigmentation, commonly used strong pulse light, Q laser, and so on. The appearance of acne marks recommended under the guidance of a doctor to use drugs, not blindly self-medication, in order to avoid adverse effects.