The so-called capillary nevus, which is a colloquial term used by the common people, is medically supposed to be an age-related hemangioma, which tends to occur in the elderly and is generally more common in the trunk area and on the arms. The size varies and the cause is genetically related. In clinical work, we found that there are also people aged 20-30 years old, but young people with vascular nevi are often pinpoint in size, and if they ask their parents if they have them, their parents will also have them. As for the elderly, on the one hand, it has some correlation with genes, and on the other hand, it is inseparable from the aging of the skin. Vascular nevus is not harmful to the body and can be treated by laser or not because it does not affect the body in any way, but is just unattractive from the point of view of appearance, and if treatment is done, it will be done from the point of view of beauty.