The birthmark on the face is usually divided into three situations: 1. The most common blue-black stain around the eyes is called nevus OTA, which is the pigment of dermis. It can be treated with laser. The treatment is simple. After the laser hits, it takes time to disperse the pigment and be swallowed by phagocytes in the body. It takes three months of treatment 1 time until it is cured. It is a blue birthmark; 2, red birthmark, red birthmark is also called hemangioma, and some may be port wine stains, which need laser to target blood vessels. The principle is that after the laser hits, it can be absorbed by hemoglobin in blood vessels, and then the blood vessels close and the red birthmark will disappear. In addition to laser, some patients may use photodynamic therapy, such as nevus flammeus, and may use photodynamic therapy, which should be selected according to different situations; 3, hairy nevus, melanin, melanin is pigmented nevus, very large or even hairy on the surface, such cases may require surgery or even skin grafting. You need to transplant normal skin from other parts. Most of them can be divided into the above three situations, and different treatment schemes need to be selected according to different situations.