Fetal heartbeat generally refers to the heartbeat of the fetus, which is mainly identified by ultrasound and fetal heart rate monitoring. In the early stages of pregnancy, the fetal heartbeat can be detected by abdominal ultrasound, and is usually seen as a regular beat. With the increase of pregnancy, pregnant women can seek medical attention in the middle and late pregnancy to hear the fetal heartbeat through Doppler fetal cardiography and fetal heart monitoring, in order to check whether the fetus has any anomalies such as lack of oxygen. Normal fetal heart rate is 110-160 beats per minute. If the fetal heart rate is not within the normal range and physiological factors such as strenuous exercise before the examination are ruled out, then the pregnant woman needs to undergo further detailed examination to investigate the cause of the disease. Some pregnant women can also seek medical attention to monitor the fetal heart sound through ultrasound Doppler fetal cardiography, usually the fetal heart sound is similar to uterine arterial murmur, but the range of placental murmur is larger than the range of uterine arterial murmur, which can be identified from this aspect. Pregnant women are advised to consult a regular hospital for examination to identify the fetal heartbeat, and should also consult a doctor for obstetric examination on time during pregnancy to monitor the development of the fetus. Daily attention to rest, to ensure a balanced intake of nutrients.