Urticaria injections are useful, especially for more severe types of urticaria, such as urticaria with anaphylactic shock, to be seen urgently, the doctor may give intramuscular injection of 0.1% epinephrine 3-5 ml, and at the same time may be fed intravenously into the dexamethasone and other hormonal drugs. Some patients have persistently low blood pressure, and may be given antihypertensive drugs, or rehydration fluids. In some patients, urticaria is induced by infection, and the patient is accompanied by fever and high blood level, which requires static clindamycin, levofloxacin hydrochloride and so on. Some types of urticaria, oral antihistamine is not good, can also be infused with compound glycyrrhizin drugs, this kind of drug has anti-inflammatory, anti-allergic effect, has a better therapeutic effect.