There are many reasons for pregnant women to have abdominal pain but no vaginal bleeding, which may be physiological abdominal pain or pathological abdominal pain, and the cause needs to be determined before taking appropriate treatment. Physiological abdominal pain: If the abdominal pain is light, short-lasting and without vaginal bleeding, it may be caused by the gradual enlargement of the uterus, pressing the pelvic bones, squeezing the abdominal organs, pulling the ligaments on both sides of the uterus and stimulating the nerves in the abdominal wall. However, if the abdominal pain is more obvious and fetal movement is too frequent, oxygen can be administered to avoid intrauterine hypoxia. Second, pathological abdominal pain: 1, acute gastroenteritis: acute gastroenteritis caused by unclean diet can appear abdominal pain, sometimes accompanied by diarrhea, need to promptly seek medical advice and follow the active treatment; 2, acute appendicitis during pregnancy: manifested as right abdominal pain, doctors usually recommend early surgery to remove the focal appendix; 3, pregnancy combined with acute pancreatitis: manifested as abdominal pain, bloating, nausea, vomiting, usually using conservative The treatment is usually conservative, such as fasting, gastrointestinal decompression, and if necessary, timely termination of pregnancy, 4. 6. pregnancy combined with uterine fibroids: if uterine fibroids have been found before pregnancy, abdominal pain or even fever and elevated white blood cells need to be treated promptly; 7. other: abdominal pain in pregnant women also needs to exclude ovarian tumor torsion or cyst rupture, both need to be seen promptly.