Red birthmark is a very common congenital vascular malformation with a prevalence of 0.3%. Although the red birthmark is not painful or itchy, when it appears in a very obvious exposed area, it affects the beauty to different degrees. This kind of birthmark is medically known as strawberry hemangioma, bright red nevus, etc. In the 1980s and 1990s, a leap in treatment was ushered in, that is, the pulsed dye laser, which is widely used in the treatment of red birthmarks, and it has been confirmed that this is the best safe and easy treatment means at present. Capillary dilation, rosacea capillary dilation, capillary hemangioma, etc., can also be easily and well treated, and all ages are among the suitable treatments, preferably early.