The channel of birth of the fetus is determined by the method of delivery. In most cases, the fetus is delivered through the birth canal (vagina); in a small number of cases where cesarean section is required for special reasons, the fetus is removed by surgical incision of the mother’s abdomen and uterus. 1. Delivery of the fetus through the birth canal: The fetus grows and develops in the uterus. When the fetus matures, the cervix and the birth canal (vagina) will soften and the uterus will contract during labor, and when the mouth of the uterus is fully opened, the fetus will enter the birth canal (vagina) from the uterus and will be delivered out of the vaginal opening eventually. 2. Cesarean section to remove the fetus: If the labor is not smooth, the pelvis is narrow, the position of the fetus is abnormal, or in other cases, it is necessary to cut the abdomen and uterus of the mother and deliver the fetus through surgical procedures to ensure the safety of the mother and the fetus. The choice of delivery method needs to be determined by a professional doctor, taking into account the condition of the mother and the fetus.