It is normal to have a sudden bowel movement during childbirth. During labor, as the uterine opening gradually opens, the position of the fetus gradually descends, and the fetal head reaches the vaginal opening, which presses the rectum and reflexively causes defecation. Therefore, pregnant women in late pregnancy need to maintain a smooth bowel movement to avoid affecting the descent of the fetus during labor. In addition, the process of labor needs to use abdominal pressure to help the fetus descend, abdominal pressure will also stimulate defecation, late pregnancy with the gradual increase of the uterus, pregnant women’s activity decreases, but also easy to cause the accumulation of feces in the intestinal tract. Therefore, defecation during labor is a normal phenomenon, do not have a psychological burden, the medical staff in the delivery room will promptly deal with the stool.