Some women experience soreness and pain in the lower back and abdomen in early pregnancy, with the degree of discomfort varying from mild to severe depending on the age and physical fitness of the pregnant woman. The incidence of abdominal pain is low and mild (some women have no discomfort) when pregnant at the optimal childbearing age (22-28 years old), and the swelling and soreness of the lower back and abdomen are obvious in early pregnancy in older women. Abdominal pain in early pregnancy is a relatively common physiological phenomenon, a physiological discomfort caused by pregnancy. However, not all abdominal pain in early pregnancy is physiological, and there are some pathological conditions that need to be excluded. For example, preterm miscarriage, ectopic pregnancy, etc. For patients with abdominal pain in early pregnancy should be identified. 1, the patient has clearly intrauterine early pregnancy in the past, at this time the stomach pain is mainly considered physiological abdominal pain caused by pregnancy, which is a normal physiological phenomenon. Early embryo implantation, uterine ligament pulling, hormone level changes in the body may lead to accelerated metabolism in the body may induce abdominal pain; often manifested as a short period of time, pain on both sides of the lower abdomen, aggravated by exertion, can be relieved after lying down and resting; at this time, pay attention to maintenance, prevent cold, eat less sour and spicy food, can effectively relieve pain; if the pain is long, gradually aggravated, or accompanied by vaginal bleeding, do not exclude the possibility of pre-eclampsia or miscarriage. If the pain is prolonged and gradually worsens or accompanied by vaginal bleeding, it does not exclude the possibility of preterm miscarriage or abortion. 2. Those who are not clearly pregnant in the past (e.g. HCG positive, vaginal ultrasound cannot see the fetal sac in the uterus, but the doctor suggests to check again after one week; or those who test for pregnancy by themselves) and have stomach pain should be alert to the possibility of ectopic pregnancy and need to go to the hospital for review, if the HCG value rises, the ultrasound can see a mass in one of the fallopian tubes and there is no fetal sac in the uterus, ectopic pregnancy is highly suspected and requires hospitalization for chemotherapy or surgery; abdominal pain of ectopic pregnancy It is often manifested as prolonged, pain in one side of the lower abdomen, with gradual intensity of pain and even fainting. In conclusion, some women may experience swelling, pain and discomfort in the lower abdomen in the early stage of pregnancy, which are generally mild and short-lived and can be relieved after lying down and resting, and do not affect their work and life, but they need to be alert to the possibility of pre-eclampsia and ectopic pregnancy, and need to go to the hospital in time to identify the cause of abdominal pain.