The vague abdominal pain in the first month of pregnancy may be a normal physiological factor, or it may be due to preterm miscarriage, ectopic pregnancy, gynecological diseases and digestive system diseases. I. Physiological factors: the vague role of abdomen in the first month of pregnancy may be due to the stimulation of the endometrium after fertilization of the egg, resulting in discomfort, if there is no abnormal vaginal bleeding, it is generally a physiological phenomenon, usually pay attention to dietary regimen and improve sleeping posture can be slowed down. Pathological factors: 1. Pre-eclampsia or ectopic pregnancy: Pregnant women may have pre-eclampsia or ectopic pregnancy in the early stages of pregnancy, when most of the pain is continuous lower abdominal cramps, vague pain, accompanied by vaginal bleeding. If the pregnancy is ectopic, the pregnancy should be terminated immediately. 2. Digestive system diseases: If the pregnant woman consumes spoiled food or overly stimulating food, as well as gastrointestinal tract infection, it will lead to intestinal spasm, which will cause abdominal pain, accompanied by diarrhea, nausea, vomiting and even Fever. Pregnant women need to promptly replenish water, pay attention to diet, and seek medical attention for severe abdominal pain and diarrhea, and use medication according to the doctor’s guidance. 3, gynecological diseases: cervicitis, pelvic inflammatory disease and other inflammatory diseases of the reproductive system can lead to abdominal pain, increased vaginal discharge and odor, etc. It is necessary to seek medical attention promptly and treat the cause after clarifying the cause.