The main difference between frequent fetal movements and hypoxia is that when there is a slight lack of oxygen, it will show up as frequent fetal movements. If the hypoxia is more serious, there will be a decrease in fetal movement. The normal frequency of fetal movement is usually 3~5 times per hour, and the number of fetal movements is more than 30 times per 12 hours. If the number of fetal movements increases significantly, this is called frequent fetal movements. If the number of movements is less than 10 in 12 hours, this is called decreased fetal movement. Frequent fetal movements or decreased fetal movements are signs of fetal hypoxia. When the fetus is in mild hypoxia, the pregnant woman may feel frequent fetal movements, and at this time, listening to the fetal heart, the fetal heart rate will be found to increase significantly. If the pregnant woman can take oxygen treatment in time, the symptoms of fetal hypoxia may improve, and fetal movement may return to normal. However, if the symptoms of hypoxia do not improve, the number of fetal movements may decrease and the fetal heart rate may slow down.