Red blood spots on the body may be allergic purpura, spider nevus, cherry angioma and other diseases caused by the cause of the general treatment, drug therapy, physical therapy and other ways of treatment. 1. Anaphylactic purpura: red blood spots on the body may be the manifestation of anaphylactic purpura, generally can be recovered on their own, first of all, should remove the triggering factors, you can follow the doctor’s instructions orally antihistamine drugs such as loratadine, which can alleviate the symptoms of skin rashes and edema. 2. Spider nevus: Spider nevus may also be manifested as small red blood spots on the body, generally no need to deal with, if it affects the appearance, laser therapy, microwave therapy, electrolysis and other physical therapy can be taken, by destroying the vascular tissue of the spider nevus, so that it can be removed. 3. Cherry hemangioma: small red blood spots on the body may also be caused by cherry hemangioma, generally no treatment is needed, if there is bleeding, it can be bandaged to stop bleeding. If it affects the aesthetics, you can choose laser, liquid nitrogen cryotherapy and other physical treatment modalities, which can remove the tumor, so that the hemangioma tissue is gradually replaced by newborn fibrous tissue. There are many reasons that lead to small red blood spots on the body, and it is recommended that patients go to the hospital, clarify the cause of the disease, and standardize the treatment under the guidance of the doctor.