It is very rare for people to be allergic to lidocaine, but if there are special people who are once allergic, they need to be resuscitated immediately, as follows: 1. Let the patient lie down, loosen the collar, belt, etc., keep the patient breathing freely, stimulate breathing with ammonia if necessary, and cooperate with oxygen. 2. Monitor the patient’s heart rate, blood pressure, pulse and other basic signs on cardiac monitoring, give the patient isoproterenol intramuscular injection, dexamethasone Intravenous injection, if the patient is very critical, also need to intravenous push thiopental sodium, dormant. 3, if the patient still can not recover from respiratory distress, need to urgently intubate, give ventilator-assisted ventilation, improve the patient’s hypoxic symptoms, improve ventilation. For people with lidocaine allergy, there are usually serious symptoms such as pallor, decreased pulse, fainting and coma, which need to be judged promptly for this special group of people.