The number of heartbeats cannot determine whether it is a boy or a girl. Boys and girls are not determined by the number of heartbeats, and whether it is a boy or a girl, a fetal heartbeat between 110-160 beats per minute is normal. The male Y chromosome combines with the female X chromosome to form a boy, and the male X chromosome combines with the female X chromosome to form a girl. The number of fetal heartbeats can reflect the health of the fetus in the womb. 1. If the fetal heart rate is greater than 160 beats per minute, it belongs to fetal tachycardia, which mostly occurs when there is active fetal movement and soon returns to normal heartbeat. If the fetal heart rate continues to be greater than 160 beats per minute, there may be the possibility of intrauterine hypoxia or asphyxia of the fetus, which requires prompt medical attention at the hospital. 2. Heart rate persistently lower than less than 110 beats / minute, belongs to the fetal heart bradycardia, suggesting that the fetus in the uterus have hypoxia and other abnormalities, should seek medical attention in a timely manner. If the fetal heart rate is too fast or too slow, you need to go to the hospital in time.