The normal fetal heart rate at 36 weeks of pregnancy is 110-160 beats per minute, with a neat rhythm and moderate strength. Under normal circumstances, the fetal heart rate can be accelerated by more than 15 beats/min during fetal movement and last for more than 15 seconds. It is normal for the fetal heart rate to exceed 160 beats/min during fetal movement. If the fetal heart rate is persistently higher than 160 beats/min for more than 10 minutes, or persistently lower than 110 beats/min, also for more than 10 minutes, both need to be alert to fetal hypoxia, and need to promptly consult a doctor for electronic fetal heart monitoring to clarify whether there is fetal distress. The changing pattern of fetal heartbeat is from early pregnancy, the fetal heart rate is fast, up to 170-180 beats/min, and gradually decreases with the growth of pregnancy week, to full-term pregnancy, usually around 130-150 beats/min, but between 110-160 beats/min is normal. In addition, 36 weeks of pregnancy belongs to the late pregnancy, you need to pay attention to the situation of fetal movement and count fetal movement carefully. If the fetus is hypoxic, the first thing that will happen is that the fetal movement will decrease, then the fetal movement will disappear, and only after that will the abnormal fetal heartbeat appear, if the fetus is not rescued from the hypoxic environment in time, it may cause fetal death. Therefore, if you feel a decrease in the number of fetal movements, you must seek medical attention in time.