The fetal heartbeat is generally considered to be normal at 120 to 160 beats per minute, and some hospitals now consider 120 to 170 beats per minute to be normal. The fetal heartbeat is the heartbeat of the fetus, normal should be regular and strong, similar to the ticking clock sound, generally considered 120 to 160 beats per minute is normal, if less than 120 or more than 160 is abnormal fetal heartbeat, some may be the fetus intrauterine hypoxia caused by abnormal fetal heartbeat. Some abnormal fetal heartbeat is also related to the physical condition of the pregnant woman, such as the pregnant woman suffers from thyroid disease, such as hyperthyroidism or the pregnant woman has a fever, which may cause the fetal heartbeat too fast. In addition, the monitoring of fetal heartbeat should also match the number of fetal movements, fetal heartbeat can be heard with a stethoscope in the abdomen around 17 weeks of pregnancy, some transient fetal heartbeat abnormalities should not be overly nervous, for example, some pregnant women bought their own listening device to listen to the fetal heartbeat at home, sometimes the above shows a transient or a few minutes of fetal heartbeat higher than 160 or lower than 120, this generally does not matter, because sometimes it is a This is normal because sometimes it is a vascular murmur or the fetus is moving around inside the body or turning over. If the fetal heartbeat is too fast or too slow for a short period of time, don’t be nervous, but if it is accompanied by abnormal fetal movement, you should go to the hospital in time.