Fetal heart monitoring is widely used in clinical practice and is one of the easiest and most effective methods for obstetricians to monitor the intrauterine condition of the fetus, as follows: 1. It can detect the intrauterine condition of the fetus at an early stage of placental abruption, such as small abruption area, little bleeding, insignificant abdominal pain and good fetal heartbeat, but as the condition develops, the abruption area is large, while abdominal pain and bleeding are not yet obvious, that is, when the clinical manifestations do not match the severity of the condition. If the fetus is found to have abnormal fetal movement or placental lesions, or if the amniotic fluid is too small, a contraction provocation test is needed to understand the fetal intrauterine condition, and fetal monitoring can reflect the fetal heart changes to assist in diagnosis. 3. The fetal heart rate can be monitored regularly during labor to understand whether there is acute hypoxia during labor.