Usually, it hurts under the opening of the uterus. After labor begins, the uterus starts contracting intermittently, at first about once every 3-5 minutes for 30-40 seconds, and when the uterus is close to full opening, the contractions can be intense to once every 1-2 minutes for 45-60 seconds each time. During this period, the cervix gradually dilates and opens from 1 to 10 fingers, the pregnant woman’s stomach also becomes hard and tight, and there is a burst of cramping pain in the lower abdomen. With the passage of time of the paroxysm, the paroxysm will extend to the pregnant woman’s waist, buttocks, uterus and vagina, at this time, the pregnant woman can relieve the pain by the following ways: 1. Adjust breathing: at the beginning and end of the paroxysm, open your mouth slightly, inhale lightly, and then blow lightly, in the middle of the paroxysm In the middle of the labor, take a deep breath in through the nose and then exhale slowly through the mouth, which helps to relax the lower abdomen and reduce the pain; 2, walk appropriately: if the opening of the uterus is not too big, you can walk appropriately with the consent of the doctor, which helps to relieve the pain; 3, painless delivery: if the pregnant woman meets the indicators of painless delivery, she can choose the intraspinal labor analgesia method. This method can effectively reduce the pain of pregnant women and build up strength for the second stage of labor.