Hemotherapy has the effect of increasing oxygenated hemoglobin saturation, fat and fibrin solubility in blood and regulating immunity; the side effect is mainly susceptible to blood infection. The full name of hemotherapy is ultraviolet irradiation oxygenated autologous blood transfusion therapy, which has the effect of increasing the oxygenated hemoglobin saturation of one’s own blood, increasing the fat and fibrin solubility of blood, lowering the concentration of cholesterol in the blood, improving the microcirculation and cerebral edema, alleviating the oxygenation of blood in the lesion area and the surrounding tissues, relieving the hypercoagulable state of the blood, and enhancing the immune system, and so on. It is suitable for various types of infectious diseases, acute and recovery period of cerebrovascular diseases, hyperlipidemia, pesticide poisoning, urticaria, psoriasis, neuritis, hyperviscosity and other diseases. Improper operation of blood therapy can easily cause autologous blood infection, and in serious cases, lead to systemic organ failure. Enough sleep should be ensured after the end of hemotherapy, which is conducive to alleviating the adverse reactions after hemotherapy. Blood therapy should be operated by professional doctors.