If the fetal heart rate reaches 180 beats per minute during fetal movement, the fetal heart rate is tachycardic and not normal. Even when the fetus is moving frequently, the fetal heart rate is between 120 and 160 beats per minute. If the fetal heart rate is more than 160 beats per minute, especially if it is more than 180 beats per minute, it indicates the early signs of fetal hypoxia. This is mainly due to fetal hypoxia and respiratory acidosis, which excites the sympathetic nerves and causes the heart rate to increase compensatory. It is necessary to go to the hospital promptly and take symptomatic treatment. Oxygen can be administered to the pregnant woman with intermittent inhalation of high concentrations of oxygen by mask to increase the maternal blood oxygen level and improve the fetal blood oxygen supply. Lie on the left side to eliminate the compression of the right-sided uterus on the abdominal aorta and iliac artery and restore the normal perfusion of the uterus. Observe for 10 minutes, and if the fetal heart rate turns normal, observation can be continued. If umbilical cord compression is considered, the compression can be released by changing position.