The difference between inhalation anesthesia and injection anesthesia: 1, the two anesthesia is not the same: inhalation anesthesia is characterized by the absence of intravenous access to do anesthesia, that is, no injection can do anesthesia, but this anesthesia is required to have an anesthesia machine. Inhalation anesthesia is intravenous anesthesia, must be injected first, that is, the intravenous needle to do anesthesia; 2, the onset of speed: the onset of intravenous anesthetics is faster, now the onset of inhalation anesthetics is also faster, but relative to intravenous anesthetics or slow; 3, compliance: because inhalation anesthetics have a smell, so there will be patients are not used to; 4, the ease of control: because inhalation anesthetics is with Because inhaled anesthetics are inhaled into the lungs with breathing, continuous inhalation is needed during surgery to ensure its concentration in the lungs, and exhaled gas monitoring can be used to show the concentration of inhaled anesthetics in the body. At the end of the procedure or when the anesthesia needs to be reduced to a lighter level, the volatile tank is simply closed or reduced. This allows the anesthetic drug in the lungs to be rapidly expelled from the body with breathing so that the patient can wake up quickly in a short period of time without significant effects on other organs. Once the intravenous anesthetic drug enters the body, it has to be eliminated by liver and kidney metabolism or its own decay, and the controllability is not as good as inhalation anesthesia. However, now there are also intravenous anesthetics with shorter duration of action, and these drugs can be administered by pump injection, and the dosage can be adjusted at any time; 5, the difference in safety and effectiveness: inhalation anesthetics have very little metabolism and decomposition in the body, and most of them are excreted from the lungs in their original form, so they are a safer anesthetic, while intravenous anesthetics are characterized by no potential danger of operating room contamination and combustion and explosion, which is conducive to ensuring staff and patient’s life safety. The choice between inhalation anesthesia and intravenous anesthesia should be made by the anesthesiologist on an individual basis, weighing the pros and cons. The choice between inhalation and intravenous anesthesia should be made by the anesthesiologist on an individual basis, weighing the advantages and disadvantages of both methods of anesthesia, with the ultimate goal of providing comfort to the patient.