The normal fetal heart rate is between 120-160 times per minute, when the fetal heart rate reaches 180 times per minute, if once in a while, it may be the frequent fetal movements that lead to a brief acceleration of the fetal heart, usually the fetal movement can return to normal after the smooth movement. If the fetal heart rate continues to be too high, usually consider the following reasons: 1, high body temperature: if the pregnant woman has a fever that does not go away, it will lead to high temperature in the uterus, causing the fetal heart rate is too high, you should promptly exclude the fever factor; 2, overwork: because the pregnant woman recently overworked, can affect the normal fetal heart rate, pregnancy should be combined with work and avoid strain; 3, disease factors: when the pregnant woman has thyroid function Hyperthyroidism, hypertension, diabetes, anemia and other diseases can lead to insufficient oxygen in the blood, causing increased fetal heart rate, so you should pay attention to a healthy diet during pregnancy and actively treat the disease; 4, fetal hypoxia: due to low placental function, placental developmental disorders or umbilical cord around the neck, knots and other reasons that lead to obstruction of blood flow, resulting in fetal hypoxia, you should regularly maternity checkups during pregnancy, testing the placenta and timely treatment of abnormal conditions. In addition, due to other diseases of pregnant women taking certain drugs can also lead to rapid fetal heartbeat. The cause of rapid fetal heartbeat should be clarified, the function of the placenta and the condition of amniotic fluid should be checked in time, and reasonable treatment should be provided under the guidance of the doctor.