Fetal movements at a frequency like a heartbeat may be caused by the baby hiccuping, or by factors such as abdominal aortic pulsation or hypoxia. It is recommended that patients should go to the hospital in time if they have any symptoms of discomfort. 1. Hiccups: generally due to the immaturity of the baby’s diaphragm and when swallowing the surrounding amniotic fluid too quickly, thus regular hiccups occur. Therefore, it is normal for the patient to experience fetal movement with the frequency of a heartbeat because the baby is hiccuping. 2. Abdominal aortic pulsation: generally due to the patient is more thin and weak, and because of pregnancy in the uterus under the pressure, pulsation will be more powerful. So the patient may appear fetal movement like the frequency of heartbeat, is a normal physiological phenomenon of the human body, usually not the baby in action. 3. Lack of oxygen: The frequency of fetal movement like heartbeat may also be caused by lack of oxygen in the baby. At the same time, fetal movement is more frequent, it is recommended that the patient should go to the hospital in time.