The phenomenon of the face being sunburned with a piece of black and a piece of white is considered to be due to ultraviolet sunburn, which can be relieved by paying attention to sunscreen, topical medication, physical therapy and other ways. 1. Pay attention to sunscreen: patients should go out to apply sunscreen, and to do a good job of physical sunscreen, by playing umbrellas, wearing a sun hat, to prevent ultraviolet radiation, which will help the face of the skin’s self-repair. 2. Topical drugs: for the face of a piece of black and white symptoms, and accompanied by itching, consider the possibility of solar dermatitis, can be used externally with glycerite lotion, can play a role in stopping the itching. 3. Physical therapy: generally refers to laser therapy, the patient can be laser therapy, the use of laser photoelectric thermal effect of crushing melanocytes, remove melanin, to achieve the purpose of whitening. For the face is sunburned a piece of black a piece of white symptoms, if the symptoms are not relieved by lifestyle modification, you should consult a doctor in a timely manner, to clarify the cause of the disease, under the guidance of the doctor for treatment.