For women in the late stage of pregnancy, if conditions permit, they may consider having a normal delivery because it is faster in recovery and better for the fetus. However, in the process of normal labor, due to the strong stimulation of contractions, it will cause severe abdominal pain or lumbar pain, some women can not tolerate the pain, often may choose to switch from normal labor to cesarean section, and some women will request a painless delivery. The so-called painless delivery is actually after the uterine opening to three centimeters, in order to reduce the pain of labor, so as to use anesthesia or analgesic drugs to achieve the effect of analgesia, but the painless delivery also has certain side effects, but the painless delivery of the baby is not much effect. The most common side effect of painless delivery is that it may lead to weak contractions, causing intrauterine distress of the fetus, and may even lead to low blood pressure and mild headache, some pregnant women may also experience temporary shivering and vomiting, and after delivery, they may also have lower back pain, and may cause local infections during anesthesia, and a very small number of women may also experience allergic symptoms due to anesthesia medication. A few women may also suffer from drug allergy due to the use of anesthesia drugs. However, painless labor does not cause 100% side effects, and the vast majority of women will not have any obvious discomfort during the process.