The left side of the abdomen paroxysmal pain in early pregnancy can generally be divided into two kinds, one is physiological abdominal pain, which is a common situation in early pregnancy, and the other is pathological abdominal pain, which needs to be carefully distinguished from physiological abdominal pain, and if necessary, seek medical examination and treatment. Physiological abdominal pain: In the early stage of pregnancy, due to the gradual increase of the uterus, pregnant women will feel pain on both sides of the abdomen, especially pregnant women who are pregnant for the first time feel more strongly, this pain is not severe pain, but a boring feeling, no special treatment, appropriate bed rest can be relieved. Pathological abdominal pain: 1, pre-eclampsia: early pregnancy, if the abdomen feels a burst of contraction pain, accompanied by vaginal bleeding, may be a manifestation of pre-eclampsia, the need for conservative treatment through oral dydrogesterone, or injection of progesterone, conservative treatment during the pregnant women need to rest in bed, not strenuous exercise, and not to have intercourse; 2, ectopic pregnancy: similar to the performance of pre-eclampsia, patients can have paroxysmal vague pain in the abdomen with vaginal bleeding, which needs to be clearly diagnosed by the doctor based on the results of ultrasound and blood HCG and urine HCG tests. Initially, the embryonic sac can be killed by oral methotrexate and other drugs to make it fall off naturally. No matter what the cause of the left side of the small abdomen paroxysm is, pregnant women should pay attention to it and go to the hospital for examination in time so that the doctor can determine the specific cause and take targeted treatment.