Fetal heart in early pregnancy 120-160 beats / minute is normal, but not more than this range is abnormal, due to early pregnancy fetal primitive cardiac tube development is immature, pregnant women emotional stress, pregnant women heart rate rise, fetal heart rate will also appear transient elevation, within a short period of time will return to normal, this is also a normal situation. Initial fetal heartbeat formation will be around the 8th-10th week of pregnancy, at this time to do pregnancy checkups, has been able to monitor the fetal heartbeat more obviously. Normal fetal heart rate varies with the intrauterine environment, and the mood of the pregnant woman, the amount of exercise, and nervousness during the test will all affect the fetal heart rate data. If there is a transient elevation of the fetal heart, it is usually normal and does not require special treatment. However, if the fetal heart rate <120 beats/minute, lasting more than 10 minutes, known as bradycardia, if the fetal heart rate >160 beats/minute, lasting 10 minutes, known as tachycardia, bradycardia and tachycardia are both manifestations of hypoxia, indicating that there is intrauterine hypoxia in the fetus, and need to identify the cause of the disease in a timely manner to be dealt with. During pregnancy, pay attention to rest, regular life, ensure adequate sleep, keep in a good mood, do not eat spicy stimulating food, light diet.