At 37 weeks of pregnancy, the thickness of the uterine scar is 1.9mm and there is a risk of uterine rupture at any time, which is already in the late stage of pregnancy and the fetus is mature, so it is recommended to go to the hospital for cesarean section in time. Generally speaking, the thickness of normal uterus in late pregnancy should be more than 3mm. If you have a history of cesarean section, when you are pregnant again, with the growth of fetus, the pressure on maternal uterus will gradually increase, which will make the scar further thinning and may risk uterine rupture. Therefore, the situation is still more dangerous when the thickness of the uterine scar is 1.9mm at 37 weeks of pregnancy. At this time, pregnant women should pay attention to rest, minimize uterine contractions and avoid factors that increase abdominal pressure. Since the fetus is already mature at 37 weeks of pregnancy, it is recommended to go to the hospital in time and choose the right time to perform a cesarean section in order to avoid the occurrence of adverse events such as uterine rupture. Care should also be taken after the delivery of the fetus. Pregnant women with scarred uterus who are pregnant again should pay attention to increasing the number of maternity examinations, early hospitalization in late pregnancy, and follow the doctor’s advice to choose a suitable delivery method.