Obstetric anesthesia is mostly epidural anesthesia, the anesthetic will not enter into the bloodstream, and the effect on the fetus is minimal. However, there are some cases in which epidural anesthesia can not be implemented, such as the mother can not cooperate, the mother has a history of lumbar trauma surgery, the mother’s coagulation function is abnormal, platelet is too low, or the condition of the fetus is not good can not wait for the epidural anesthesia to take effect of the time to start the operation immediately. These cases need general anesthesia, general anesthesia, the mother is completely unconscious, but general anesthesia into the blood will have an effect on the fetus, anesthesia implementation as much as possible to choose a small effect on the fetus of the drug. Sometimes in order to reduce the time of action of the drug, the first local anesthesia cut skin, and then use intravenous general anesthesia.