There is no so-called most effective drug for treating urticaria, but we need to choose the most suitable drug according to the change of the condition and the severity of the condition, such as oral antihistamine drugs such as loratadine tablets, intravenous dexamethasone injection and so on. 1. General treatment: urticaria is mainly manifested by the sudden appearance of red or pale-white wind, and accompanied by intense itching, in the treatment of the need to give antihistamines, such as oral levocetirizine hydrochloride capsules, loratadine dispersible tablets and so on. 2. Emergency treatment: acute attacks of urticaria may induce laryngeal edema, resulting in respiratory distress, or even life-threatening, in which case it is necessary to give some glucocorticoid drugs to quickly relieve the phenomenon of edema, such as intravenous dexamethasone injection. Due to the different physical condition of the individual, there will be some differences in the therapeutic effect, the specific circumstances must follow the doctor’s instructions for the use of medication.