Fetal heart rate has been relatively low, you need to go to the hospital in time to do relevant examinations to clarify the cause before treatment. Normal fetal heart rate is 110-160 beats per minute. If the fetal heart rate is lower than 110 beats per minute in late pregnancy, it may be caused by fetal hypoxia, and you need to go to the hospital immediately for low-flow oxygen intake for 30 minutes, and then do fetal heart rate monitoring and ultrasound to observe the status of the fetus in the uterus. If the fetal heart rate is found to be low in the middle of pregnancy, it may be caused by a congenital disease of the fetus, which requires prenatal screening and fertility preservation treatment. Some fetuses are also caused by poor sleeping position, mental stress and fatigue of pregnant women, which can be relieved by adjusting the posture and resting, and the fetal heart rate can be checked again after maintaining a stable mood. Low fetal heart rate needs to attract the attention of pregnant women, timely medical attention to understand the causes, to avoid adverse consequences. During pregnancy, pay attention to rest more, at the same time should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.