After pregnancy, due to changes in hormone levels and neuroendocrine effects, a series of physiological changes occur in the body of pregnant women, including changes in the intestinal tract. Clinically, it has been shown that 90% of pregnant women may become constipated. One of the main causes of constipation in pregnant women is the pressure of the enlarged uterus on the rectum. As the weeks of pregnancy increase, the uterus enlarges and the fetal head enters the pelvis with greater pressure on the rectum, increasing the incidence of constipation. Coupled with the influence of a large amount of progesterone in the body, the gastrointestinal smooth muscle tone is reduced and relaxed, peristalsis is weakened, the residence time of feces in the large intestine is prolonged and pregnant women are less active, so constipation is more likely to occur. In addition, pregnant women may change their diet in the early stage, eat too much nourishing food, coupled with less exercise, may also be prone to constipation. Therefore, it is very common for pregnant women to experience constipation. In summary, constipation during pregnancy is a common phenomenon, and most of the symptoms will subside with the change of time during pregnancy, do not worry about this. As a pregnant woman, it is important to keep your mood relaxed, eat more easily digestible vegetables and fruits with more fiber, eat less spicy and stimulating foods, and develop the habit of regular bowel movements to prevent constipation.