Small red blood nevus on chest may be related to cherry angioma, spider nevus and other diseases, usually without treatment, if necessary, can be removed by laser. 1. Cherry hemangioma: also known as senile hemangioma, is the most common hemangioma, may be associated with aging blood vessels, no special treatment is needed, and can be removed by laser if self-consciousness affects aesthetics. 2. Spider nevus: it is related to the increase of estrogen. It is usually seen in liver disease, and can also appear in some normal people or pregnancy. Disease-induced spider nevus needs to be treated firstly, while spider nevus under normal health condition does not need special treatment, and spider nevus during pregnancy can subside on its own after delivery, and does not need special treatment. Small red blood nevi on the chest may also be caused by other diseases, so it is recommended to consult a doctor for a clear diagnosis.