Fetal heart monitoring is a means of monitoring the fetal heartbeat by applying a fetal heart rate detection device, which helps to understand and assess the condition of the fetus in the uterine cavity. Generally, it is slightly early to do fetal heart monitoring at 32 weeks. If the pregnant woman has no high-risk factors and no special circumstances, she can wait until 34 weeks of pregnancy to have fetal heart monitoring. However, if the pregnant woman has serious pregnancy complications, such as hypertensive disorders in pregnancy or gestational diabetes, and her condition is not well controlled, fetal heart monitoring can be done earlier than 32 weeks. Since 32 weeks is the late stage of pregnancy and the fetus is gradually developing and maturing, many pregnant women will choose to have fetal heart monitoring at this time. However, for the average low-risk pregnant woman, even if the fetal heartbeat is unresponsive at 32 weeks, the diagnosis of acute intrauterine distress cannot be confirmed. If a cesarean delivery is done because of poor fetal heart monitoring, the newborn may have various complications of preterm delivery and a poor prognosis, so it is not recommended to overdo the test and you can wait until after 34 weeks for fetal heart monitoring. However, for women with high-risk factors, fetal heart monitoring should be performed appropriately to prevent accidents. Meanwhile, at 32 weeks of pregnancy, pregnant women can have fetal 3D ultrasound and also routinely listen to fetal heartbeat on the abdomen. In addition, if the fetus shows a significant decrease in fetal movement or is particularly frequent, fetal heart monitoring is needed. The pattern of fetal heart response can be seen on the fetal heart monitor graphic. If there are 3 or more accelerations in the fetal heart monitor, it often indicates that the fetus is responding well in utero and the fetus is safer in most cases. If recurrent late decelerations or variant decelerations or persistent fetal heart slowing are found on the fetal heart monitor graph, they all indicate possible fetal hypoxia. Immediate hospitalization is recommended and the mother can be placed in the left lateral position and noted for improvement in fetal heart monitoring. Meanwhile, the fetal sleep cycle is 20-40min, so if the fetal heart monitoring response type is poor, we should also consider the possibility that it is caused by the fetal sleep cycle, and it is recommended to extend the time of fetal heart monitoring. In addition, when doing fetal heart monitoring, it is not recommended that pregnant women do the test on an empty stomach, which can easily lead to false positives.