Difficult labor may be caused by the following factors: First, the pregnant woman herself is overly nervous. Second, it may be caused by weak contraction of the uterus, which may lead to obstructed labor. 3. It may be caused by twin or multiple births. 4. The fetus may be huge. In addition, it may be due to abnormal fetal orientation or pelvic stenosis, and disease such as uterine fibroids or ovarian tumors cannot be ruled out. In case of difficult labor, it is best to choose the caesarean section to avoid endangering the life of the pregnant woman. Therefore, it is important to go to the hospital regularly during pregnancy to check the development of the fetus and the physical condition of the pregnant woman, and to do a good assessment and education before delivery to reduce the incidence of obstructed labor as much as possible.