Usually, the effect of anesthesia on the fetus is minimal, but it still needs to be analyzed according to different situations. Whether anesthesia for pregnant women can affect the fetus depends mainly on the method of anesthesia, and the time the fetus is exposed to or exposed to the drug. 1, anesthesia method: local anesthesia or lumbar anesthesia for pregnant women has less effect on the fetus, because when local anesthesia and lumbar anesthesia are used, the anesthetic is not involved in blood circulation, so it usually does not affect the brain development of the fetus. However, if intravenous general anesthesia is used, the anesthetic will be involved in blood circulation and may affect the brain development of the fetus; 2. Time of drug exposure: In early pregnancy, during the period of fetal organ development (15-56 days), exposure to anesthetic drugs may cause abnormal fetal organ development, and if the placenta is not functioning perfectly at this time, it will lead to an increased probability of miscarriage. In the middle of pregnancy, i.e. after 12 weeks, the danger of narcotics decreases significantly; and in the late pregnancy, narcotics generally do not affect the fetal organ structure. It is important to note that it is generally recommended to avoid exposure to anesthetic drugs within the third trimester of pregnancy. If anesthetic drugs must be used, the anesthesia method and the dosage of anesthetic drugs should be determined by professional doctors and anesthesiologists, taking into account the wound condition of the pregnant woman, the month of the fetus in her body, and the basic condition of the fetus in utero, so as to minimize the impact on the pregnant woman and the fetus.