Red nevus on the body may be caused by abnormal hormone level, liver disease, cherry angioma and so on. 1. Hormone level abnormality: obese or pregnant patients have red nevi due to the rising estrogen level in the body and decreasing metabolizing ability of the liver, which do not need special treatment. 2. Liver disease: if patients suffer from liver cirrhosis, liver cancer and other diseases, liver function metabolism is abnormal, which leads to the decrease of liver’s ability to inactivate estrogen, resulting in red nevus on the body. 3. Cherry hemangioma: this disease belongs to benign acquired capillary hemangioma, which is related to age factor. After the proliferation of capillaries in the skin of patients, irregular bumps are formed, which leads to the appearance of bright red or purplish-red papules on the skin, and it will be increased and enlarged with age. If there are uncomfortable symptoms, we should go to the hospital in time, under the doctor’s diagnosis, according to the patient’s specific condition performance, take targeted treatment, pay attention to the life of the diet is light, eat less spicy and stimulating food.