Blood nevus can be treated by laser, freezing and active treatment of primary diseases. Hemorrhagic nevus is a red hemispherical smooth papule on the skin, clinically including senile hemangioma and spider nevus. Senile hemangioma is cherry hemangioma, which mainly occurs in the elderly population, with low malignancy. If it does not affect the appearance, no special treatment is generally required. If it affects the appearance, it can be treated by laser or freezing. The incidence of spider nevus is mainly related to the increase of estrogen level and liver cirrhosis. A few spider nevus can disappear by themselves. For patients with multiple spider nevus, it is necessary to check whether there is any problem with the liver. If it is liver cirrhosis, it is necessary to timely carry out treatment such as liver protection.