Spider nevus on the face first need to clarify the cause of the disease, for the cause of the treatment, the cause of the unknown can be treated by laser and other physical methods. The cause of spider nevus is not clear, but it may be related to the increase of estrogen level. Spider nevus that occurs during pregnancy mostly disappears by itself within 6 weeks after delivery and does not need special treatment. Spider nevi caused by liver diseases, such as acute hepatitis, chronic hepatitis, cirrhosis, etc., need to be treated for the primary disease, and as the primary disease improves, the spider nevus can generally be reduced and disappear. In addition, physical therapy such as freezing, carbon dioxide laser and microwave can be applied to remove spider nevi. If you have spider nevus, you should consult a doctor in time to find out the cause of the disease and follow the doctor’s instructions.