The normal fetal heart rate should be 120 beats per minute – 160 beats per minute. A fast fetal heart rate may be a physiological phenomenon caused by the pregnant woman’s excitement or after exercise, or it may be an abnormal condition of the fetus or the pregnant woman, which needs to be considered according to the specific situation whether it is a physiological phenomenon or caused by other abnormal reasons. I. Physiological factors: If the pregnant woman is excited, just exercise or fetal activity in the mother just after the test, the fetal heart rate may be too fast, can be tested again after half an hour, if the fetal heart rate returns to normal, it is a normal physiological phenomenon; In addition, the pregnant woman just after contractions will also cause the fetal heart rate to accelerate, which is also normal. Second, the pathological factors: 1, fetal factors: may be the initial manifestation of fetal hypoxia, can be caused by abnormal placental development, umbilical cord prolapse, pregnant women overdue pregnancy, diabetes, etc., may also be related to the abnormal development of the fetal heart, need timely examination under medical advice, to find the cause, the cause of treatment; 2, maternal factors: pregnant women in the cold, fever, anemia, hyperthyroidism and many other states, body temperature increases, their own This may lead to a significant increase in the heart rate of the fetus. If the fetal heart rate is found to increase when doing fetal heart monitoring, you can let the pregnant woman stabilize a little and then do it again, if the fetal heart rate is still fast. If the fetal heart rate is still fast, the pregnant woman can be put in the left side position and then treated with oxygen. If it is still not relieved, you can do another fetal biophysical scoring test, and according to the scoring result, the doctor will judge the situation and carry out follow-up treatment.