The most common causes of bleeding spots on the body are as follows: 1) Allergic purpura, which is mainly caused by the expansion of capillaries after the skin has been stimulated, resulting in an increase in local bleeding spots. 2) Autoimmune thrombocytopenic purpura, which has no obvious cause. The most of them are due to the destruction of platelets due to low immunity, and then there will be an increase in skin bleeding spots. 3, hemangioma, is due to liver disease or excessive secretion of estrogen in the internal system, which leads to the expansion of small blood vessels and the formation of red bleeding spots. 4, anemia or leukemia, blood system diseases are mostly appearing coagulation abnormalities, leading to bleeding spots.