Treatment of purpura: bed rest, active search and elimination of causative factors, such as infection control, vitamin supplementation. With urticaria or neurogenic edema application of antihistamines and calcium; abdominal pain application of antispasmodic; gastrointestinal bleeding should be fasting, can be intravenous cimetidine, if necessary, blood transfusion treatment. In the acute stage for abdominal pain and arthralgia, glucocorticoids can be given for relief, but cannot prevent the occurrence of renal damage. Immunosuppressive agents, such as cyclophosphamide, may be added for severe allergic purpura nephritis. In addition, anticoagulant therapy can be used, and the drugs mainly include those that prevent platelet aggregation and thrombosis, such as aspirin, as well as heparin and urokinase. In addition, calcium channel antagonists, such as nitinpyridine, are beneficial to the recovery of vasculitis.