The causes of anesthetic poisoning are broadly the following two: first, anesthetic causes allergic reactions in humans and toxic reactions, headache, dizziness, blurred vision, blood pressure first increases and then decreases, accelerated heart rate, multilingualism, irritability and other symptoms of general discomfort, which can seriously lead to coma, shock or even life-threatening. Second, local anesthetics into the blood vessels after the poisoning reaction, often due to the accidental injection of local anesthetics into the blood vessels, but also due to the local use of local anesthetics in the process of local blood vessel rich or inflammation and other reasons resulting in excessive blood flow, will lead to local anesthetics into the blood vessels more than a certain concentration caused by poisoning reactions. After the poisoning caused by local anesthetics can appear in the early stage of mouth numbness, blurred vision, speech impairment, etc., and in the late stage can also appear muscle spasms, respiratory muscle paralysis and other symptoms endanger the lives of patients.