Children with melanin deposits on the face may be caused by ultraviolet rays or long-term use of hormone drugs; often through general care, if necessary, laser surgery treatment. 1. Ultraviolet light: If the child is exposed to ultraviolet light for a long time, it may lead to melanin precipitation, and it is necessary to pay attention to preventing the excessive radiation of ultraviolet light, controlling the time of sunbathing when going out and taking good measures to prevent sunlight. 2. Hormone drugs: If children use hormone drugs for a long time may lead to melanin precipitation. After stopping the drug can be relieved, daily attention should be paid to the use of mild components of the cleanser wash face, avoid buying skin care products containing irritating chemical ingredients. If necessary, you can also consider laser technology to get rid of it. If a child has melanin deposits on his face, it may be due to other reasons, so it is recommended to go to the hospital in time, under the guidance of the physician, to identify the cause and then give targeted treatment.