Parents are always concerned about the need for anesthesia for surgical operations, thinking that the brain will be stupid after anesthesia and will affect the intelligence of the child, is this idea correct? If the brain cells stop supplying oxygen for 5-8 minutes, the metabolism of the brain cells will be seriously affected and the brain function will be affected, even causing irreversible consequences. There are 3 types of anesthesia commonly used in pediatric patients: 1. Basic anesthesia: refers to preoperative sedation, followed by local anesthesia or plexus anesthesia. 2, site anesthesia: including local anesthesia, lumbar anesthesia, and plexus anesthesia. These two types of anesthesia only impede the conduction of nerve fibers or nerve trunks and play a local anesthetic role, and the consciousness is clear during anesthesia. Therefore, the intelligence is not affected. 3, general anesthesia: the so-called general anesthesia is the inhalation of anesthetics or intravenous injection of anesthetics, inhibit the cerebral cortex, so that the child temporarily unconscious, in the case of painless sleep to ensure the completion of various surgeries. During the process of general anesthesia, the child’s breathing is controlled by the machine, oxygen supply is guaranteed, and all vital indicators such as blood pressure and heartbeat are in the normal range, which do not affect the respiratory and circulatory functions and do not cause cerebral hypoxia. In the process of general anesthesia, although the child loses consciousness, but after the anesthesia, the child gradually wakes up and everything returns to normal, just like waking up from a sleep, and the intelligence of the child is not affected. 4.Cryogenic anesthesia: generally used for pediatric cardiovascular surgery. This anesthesia needs to block the circulation and bring down the body temperature, the respiration and circulation of the pediatric patient, and bring down the body temperature, the respiration and circulation of the pediatric patient is replaced by an artificial heart-lung machine to keep the metabolism at a minimum level. Intelligence tests were done to compare these pediatric patients before and after surgery, and it was found that there was no significant difference in IQ before and after surgery. Children who underwent surgery after anesthesia had normal memory and their academic performance did not decrease, so parents’ concerns about anesthesia are unnecessary.