One month pregnant belly pain, it has three main causes: first, physiological pain, because the mother belly pain mostly starts from the 1-3 months of pregnancy. Experts point out that the reason why most pregnant women have stomach pain at this time is overwhelmingly due to the enlargement of the uterus, so with the gradual development of the fetus, the pregnant mother’s uterus will also increase in size, and the enlarged uterus will constantly stimulate the rib cage to extend down, thus leading to a vague dull pain in the small abdomen of the pregnant mother. Second, pathological abdominal pain, pre-eclampsia or ectopic pregnancy can lead to abdominal pain, this situation is mostly continuous lower abdominal pain, accompanied by vaginal bleeding and other situations, then pregnant mothers need timely hospitalization. Thirdly, caused by gastrointestinal or other diseases, pregnant mothers eat spoiled food or too frozen and irritating food, which can lead to intestinal cramps and thus cause stomach pain. In addition, acute enteritis, gastroenteritis, acute pancreatitis, uterine fibroid degeneration and other diseases may also be one of the causes of stomach pain in early pregnancy. When these conditions occur, pregnant mothers should go to the hospital in time to seek medical attention and treat the symptoms.