Fetal heart values in late pregnancy do not determine the sex of the fetus. Fetal heart rate in late pregnancy is higher than 150 beats/min and if it is lower than 160 beats/min, the fetal heart rate is normal. If the fetal heart continues to exceed 160 beats/minute, intrauterine hypoxia may occur and requires prompt medical treatment. Fetal heart rate in late pregnancy is normally between 110-160 beats/min. If the fetal heart rate is lower than 110 beats/min or higher than 160 beats/min, it is necessary to be vigilant against intrauterine hypoxia, and there may be intrauterine distress of the fetus. Fetal heart can only assess the condition of the fetus in the uterus, and cannot infer other conditions, such as the sex of the fetus. After 34 weeks of pregnancy, weekly electronic fetal heart monitoring is required to assess the health of the fetus in the womb. Fetal movements can also be monitored and the fetus can be observed as well. If there is a significant increase or decrease in fetal movement and other changes, you need to be alert to the condition of intrauterine hypoxia of the fetus, and seek timely medical examination.