Fetal heartbeat refers to the heartbeat of the fetus, which can usually be heard in the abdomen with a normal stethoscope at 17-20 weeks of gestation. A normal fetal heartbeat is regular and strong, with a normal value of 110-160 beats/minute. A fetal heart rate greater than 160 beats/minute is called a fast fetal heart rate. A rapid fetal heart rate is related to the woman’s physical condition and the health of the fetus. When a woman is tired or hungry, it will lead to an increase in the pregnant woman’s heart rate, and when the pregnant woman’s heart rate increases, it will also lead to an increase in the fetus’s heart rate, which is called a fast fetal heart rate. Generally, after a few moments of rest or after eating, the fetal heart rate will gradually decrease. Therefore, women must pay attention to rest after pregnancy, pay attention to the regularity of meals, and avoid hunger, which will affect the growth and development of the fetus. In addition, an increase in fetal heart rate will also occur when the fetus moves in the uterus, but it will not affect the development of the fetus. Fetal heart rate can reflect the development of the fetus in the female uterine cavity. Fetal heart rate will increase in the early stage of intrauterine oxygen deprivation; low amniotic fluid in the uterine cavity will also lead to increased fetal heart rate, and increased fetal heart rate will also occur if the fetus has congenital heart disease, which will increase the frequency of the fetal heart rate more frequently. In this case, the fetal heart rate will increase more frequently. If the fetal heart rate increases, it is necessary to consult a doctor in time, so as not to affect the healthy development of the fetus.