It is a kind of hemangioma formed by abnormal development of blood vessels on the surface of the skin, mostly seen in infants and children, mostly on the side of the face and neck, which seriously affects the appearance. In the past, surgery, freezing or isotope treatment are often used, but they may leave scars. Some parents believe that gold rings will rub off, which is purely not scientific, but delays the treatment of children. This is purely unscientific and delays the treatment of the child. Especially, the nevus doesn’t disappear with age, but becomes bigger and bigger with facial development. For the rapidly developing hemangioma, it must be treated early. Pulsed dye laser uses the principle of selective photothermal action, and through specific wavelength of laser irradiation, the hemoglobin in the abnormal blood vessels will be coagulated and the walls of the vessels will be shrunken, thus achieving the effect of treatment without damaging the normal skin, and the treatment of children’s hemangioma will not only leave no scars, but the technology is like a long “eye” pulsed laser with short treatment time. The treatment time is short, and there is no pain, no scars, and even a newborn baby can be treated safely.