The side effects of anesthetic drugs are as follows: 1. They are used for local or nerve blocking drugs, such as lidocaine and ropivacaine, which are most commonly applied. Toxic side effects are when inappropriate use or overdose, inadvertently into the blood circulation, can lead to acute narcotic drug poisoning reaction. The main performance of neurotoxicity and cardiotoxicity, especially serious when it can lead to cardiovascular accidents, the need to enter the toxic anesthetic drug rescue process; 2, the application of general anesthesia drugs including sedation, analgesia, muscle relaxants, general anesthesia to use these three types of drugs to ensure that the patient sedation, analgesia, loss of consciousness, muscle relaxation state. Toxic side effects to set the scene, that is, whether under the use of trained professional anesthesiologists. So anesthetic drugs, regardless of local anesthetics and general anesthetics, are relatively safe as long as they are well monitored and protected under the professional use of anesthesiologists.