When it comes to the word “general anesthesia”, many people will be afraid of it, and the main questions include what to do if you can’t wake up after general anesthesia, will I be stupid after general anesthesia, will there be a doctor in charge of me during general anesthesia, and so on. It is undeniable that these are questions of immediate interest to patients, but before answering these questions, I would like to ask, “Have you already understood general anesthesia? If the answer is no, please allow me to make an introduction to general anesthesia and lift the mystery of general anesthesia. There are three main types of general anesthesia: intravenous anesthesia, inhalation anesthesia, and combined static and inhalation anesthesia. Intravenous anesthesia: refers to the general anesthetic effect produced by intravenous injection of anesthetic drugs. Inhalation anesthesia: general anesthesia is produced by inhaling anesthetic gas. Combined inhalation anesthesia: general anesthesia is administered to a patient using a combination of intravenous and inhalation anesthesia. The disadvantage is that it requires intravenous injection and the recovery time is relatively slow; inhalation anesthesia is simple and painless, with rapid onset of action and short recovery time, but the disadvantage is that it can cause environmental pollution in the operating room, and the analgesic effect is poor. The advantage is that it prevents the accumulation of drugs from causing respiratory depression to the patient, ensures the patient’s ventilation and oxygen supply, and also reduces the respective dosage of anesthetic drugs. The major difference between intravenous anesthesia, inhalation anesthesia, and combined inhalation anesthesia is that the latter requires the use of inotropic drugs, while the former two do not. Myorelaxants act mainly on the transverse muscles, and after administration of the drug the patient’s respiratory muscles are depressed, and the anesthesiologist must extubate the patient, connect the ventilator, and give mechanical ventilation to ensure the patient’s oxygen supply. The anesthesia administration can be stopped before the end of the surgery to allow the drug to metabolize in the body and then wait for the patient to wake up. Although anesthesia administration has been stopped, the patient is still in danger and may still be deprived of oxygen due to airway obstruction, vomiting and inadvertent aspiration, or drug residue. Usually a doctor and a nurse will watch over the patient during awakening to prevent unexpected situations. The patient will not be sent back to the ward from the operating room until he or she regains consciousness, has stable vital signs, can understand the instructions of the medical staff, and is not in discomfort.