Stomach pain in pregnancy may be a normal phenomenon caused by the enlargement of the uterus, and appropriate rest is recommended. It may also be caused by preeclampsia, gastroenteritis and other diseases, which can be treated with medication and surgery. 1. Enlarged uterus: When pregnant women are pregnant, the symptoms of stomach pain may be a normal phenomenon caused by the enlargement of the stomach during pregnancy. When the uterus gets bigger during pregnancy, it will cause the uterine muscles to be stretched, which will lead to the symptoms of pain. Pregnant women are advised to ensure adequate rest and should not exert themselves. 2. Pre-eclampsia: For stomach pain in pregnancy caused by pre-eclampsia, patients can take oral dydrogesterone tablets, progesterone capsules and other estrogen and progesterone as prescribed by the doctor. The patient can also take surgical treatment, mainly for the removal of uterus, scraping surgery and other surgical methods. 3. Gastroenteritis: gastroenteritis can also lead to the phenomenon of stomach pain in pregnancy, the patient can follow the doctor’s orders montelukast to stop diarrhea, but also oral bifidobacterium triple live bacterial capsules, bifidobacterium quadruple live bacterial capsules and other probiotic drugs. When pregnant women experience stomach pain, if it is caused by the enlargement of the uterus, no special treatment is needed. In addition to the above mentioned diseases, it may also be caused by other diseases such as irritable bowel syndrome, gastric ulcer, etc. The patient should consult a doctor in time and follow the doctor’s instructions for treatment.