The vague pain in the stomach at 34 weeks of pregnancy may be caused by physiological reasons such as pseudo contractions, bed rest can be temporarily observed, if the abdominal pain does not ease and gradually worsen, it is considered to be caused by pathological factors, such as preterm labor, placental abruption, enteritis, etc., should immediately go to the hospital for timely consultation and symptomatic treatment. I. Physiological causes: the rapid growth of the fetus in late pregnancy causes the enlarged uterus to stimulate the pelvic organs, resulting in a certain degree of extrusion and pain, and the pain symptoms can be relieved after rest. In addition, pseudo contractions due to the increased sensitivity of the uterine muscles can also lead to vague pain in the stomach, stomach cramps, generally after rest or change of position, the symptoms of pseudo contractions can be relieved. 2. Pathological causes: 1. Premature labor: when contractions are gradually regular and accompanied by vaginal bloody discharge or fluid, it is considered a sign of preterm labor and requires timely hospital consultation and preparation for delivery; 2. Placental abruption: it occurs in pregnant women with hypertension and chronic hypertensive disease during pregnancy, mainly manifesting as vaginal bleeding and abdominal pain, and requires immediate hospital ultrasound examination to clarify the grading of placental abruption and to establish intravenous access. Complete blood routine, cross-matching and other related tests. If the placenta abruptio is of degree I, and the pregnancy and fetus are in good condition, it can be temporarily observed and monitored. If the placenta abrupts in degree II or III and cannot be delivered immediately, the pregnancy should be terminated by cesarean section in time; 3. You can avoid dehydration by drinking rice soup and warm water several times in small amounts, and appropriately supplement foods containing electrolytes to prevent water-electrolyte disorders. If the symptoms of abdominal pain are not relieved, you should go to the hospital for examination in time.