The birthmarks on children, i.e. moles, generally have no effect on the body, and some of them will gradually lighten or even fade away on their own as they grow older, such as bright red nevus. The main purpose of the treatment is to crush or vaporize the pigment in the skin by using light and heat, which can be accurately positioned and will not accidentally hurt normal tissues. It can be accurately positioned and will not accidentally hurt normal tissues, and will not leave obvious scars if reasonable care is taken after treatment; 2. Surgical treatment: such as hemangioma and nevus, if the effect of conservative treatment is not good, surgical treatment is needed, and some children may need multiple surgeries. Whether it is surgical or non-surgical treatment, the care of children’s birthmarks after treatment is more important, pay attention to keep the local skin clean and dry, and eat lightly. Pay attention to prevent children from scratching and picking to avoid infection and even aggravate the scar residue.