Allergic hives after the new crown vaccine can be treated with anti-allergy drugs or epinephrine injections under the guidance of a doctor. 1. taking anti-allergic drugs: after the crown vaccine patients appear allergic generalized urticaria symptoms, should pay attention to avoid re-vaccination of the new crown vaccine, to prevent the cause of major allergic reactions to the body. Patients can also take cetirizine, loratadine and other anti-allergy drugs under the guidance of the doctor to help relieve the above symptoms. 2. Injection of epinephrine: patients with severe urticaria attack or accompanied by angioedema and other symptoms, under the guidance of the doctor can be injected with epinephrine medication method of treatment to help relieve the condition. New Crown vaccination allergy hives patients should go to the hospital in time to consult the doctor, should also pay attention to follow the doctor’s instructions for medication, to prevent adverse reactions.