Maternal stomach pain is mainly caused by the following reasons: First, because the uterus has not yet returned to its normal size after giving birth, the smooth muscle of the uterus will contract, so that the uterus returns to its normal size and discharges the stagnant blood in the uterine cavity, so there will be symptoms of stomach pain, which is a normal phenomenon, most of this stomach pain will not be severe pain, but only paroxysmal pain. Secondly, after giving birth, eat too greasy food, which increases the burden on the gastrointestinal tract, or unclean diet leads to the symptoms of enteritis, so there will be stomach pain, which is often accompanied by changes in the nature of the stool and an increase in the number of stools. In the postpartum period, it is important to give a scientific diet and not to eat too greasy food. If diarrhea occurs, go to the hospital for examination and treatment in time.