The small abdominal pain at the beginning of conception can usually be divided into normal physiological phenomena such as an enlarged uterus, as well as constipation, pre-eclampsia, and pain caused by ectopic pregnancy, which requires timely access to a hospital to identify the cause and then targeted treatment. Common causes and treatment measures a. Normal physiological phenomenon due to the needs of fetal growth and development, the uterus will increase, which may cause the uterine ligament pulling, resulting in pain. It can be caused by elevated estrogen, which stimulates the gastrointestinal tract and relaxes the smooth muscles of the stomach and intestines, thus leading to gas and bloating and causing abdominal distension. It can also cause discomfort due to the enlarged uterus pressing on the gastrointestinal tract, which generally does not require special treatment. Second, the abnormal situation 1, constipation: due to a sudden reduction in activity, and improper diet, etc., causing gastrointestinal peristalsis slowed down, resulting in the intestinal content can not be discharged in a timely manner, which leads to abdominal distension and pain. Regular bowel movements, drinking more water, appropriate activities, and adjusting the diet are needed. For example, eat more oats, celery and other dietary fiber-rich food, appropriate slow walking, yoga and other activities; 2. Pre-eclampsia: often due to fetal chromosomal abnormalities, maternal systemic diseases, endocrine abnormalities, such as luteal insufficiency, hypertension, etc., manifested as vaginal bleeding, abdominal pain and other symptoms. Under the guidance of professional doctors, progesterone supplementation should be provided in a timely manner according to the situation. 3. Ectopic pregnancy: caused by the fertilized egg being laid outside the body of the uterus, which may result in hidden abdominal pain, soreness and swelling, vaginal bleeding and so on. After a clear diagnosis, you can choose to use conservative treatment such as aminoglutethimide and other drugs and tubal opening and suturing under the advice of your doctor. Pregnant women need to keep their mood relaxed and avoid excessive tension and anxiety. Rest should be paid attention to. Sexual intercourse and strenuous exercise are prohibited in early pregnancy.