The fetal heart rate in early pregnancy is normal at 120-160 beats per minute, but it is not abnormal if it exceeds this range. Due to the immaturity of the fetal primitive heart tube in early pregnancy and the emotional stress of the pregnant woman, the heart rate of the pregnant woman will rise, and the fetal heart rate will also appear to rise transiently, and will return to normal within a short period of time, which is also normal. The initial fetal heartbeat will be formed around the 8th-10th week of pregnancy, when the fetal heartbeat can be monitored more obviously during pregnancy checkups. The normal fetal heart rate varies according to the environment in the uterus, and the mood of the pregnant woman, the amount of exercise, and the nervousness during the test can affect the fetal heart data. If there is a transient increase in fetal heart rate, it is usually normal and no special treatment is needed. However, if the fetal heart rate is less than 120 beats/min and lasts for more than 10 minutes, it is called bradycardia, and if the fetal heart rate is more than 160 beats/min and lasts for 10 minutes, it is called tachycardia. Both bradycardia and tachycardia are signs of hypoxia, which means that the fetus is suffering from intrauterine hypoxia and needs to be treated promptly to identify the cause. During pregnancy, pay attention to rest, regular life, ensure sufficient sleep, keep a relaxed mood, do not eat spicy and stimulating food, light diet.