The abdominal swelling in early pregnancy is generally due to normal physiological factors, but also seen in pre-eclampsia, ectopic pregnancy, etc. Pregnant women should promptly seek medical advice, improve the pregnancy examination, combined with their own symptoms, the doctor to determine the cause, determine the treatment plan. 1, physiological factors: early pregnancy, the embryo in the uterus gradually increased, the uterus increases, pregnant women may feel a feeling of lower abdominal swelling, accompanied by mild abdominal pain, which is normal, generally No special treatment is needed. If the pregnant woman feels more obvious discomfort, she can rest in bed and observe whether the discomfort is reduced; 2. Pre-eclampsia: If the early pregnancy is accompanied by vaginal bleeding in addition to the feeling of abdominal cramping, it may be due to pre-eclampsia miscarriage and should seek medical attention in time. If the embryo is well developed, the embryo can be treated under the guidance of the doctor; if the ultrasound examination shows that the embryo is not well developed, the cause should be identified and the pregnancy should be terminated at the right time; 3. ectopic pregnancy: the abdominal cramping in early pregnancy may also be caused by ectopic pregnancy, because the embryo is not laid in the uterus, but in the fallopian tube, ovaries and other parts outside the uterine cavity, resulting in the feeling of abdominal cramping in early pregnancy. It is recommended to consult a doctor in time to clarify the specific location of ectopic pregnancy and the embryo through ultrasound and other examinations, and then to choose medication or surgery taking into account the condition of the pregnant woman. 4. gynecological diseases: such as pelvic inflammatory disease, tubal cysts, etc. may cause a feeling of abdominal cramping, which should be treated with medication under the guidance of a doctor to avoid blind medication affecting the safety of the fetus and the pregnant woman. 5. combined digestive system diseases during pregnancy: such as appendicitis The pain caused by appendicitis will start in the upper abdomen, and then slowly move to the lower abdomen and other locations. Due to the unstable development of embryo in early pregnancy, it is easily affected by various factors such as external environment or hormones in the body, resulting in miscarriage. Therefore, if a pregnant woman has symptoms that cannot be relieved, she should immediately consult a doctor for examination and treatment according to the cause.