Fetal hiccups are a relatively common physiological phenomenon of the fetus in the uterus, and are usually not considered fetal movement. Fetal movement refers to the activity of fetal limbs, which can be felt by pregnant women when the fetus touches the uterus by stretching, flexing limbs, kicking or rolling. Hiccups are due to the fact that the fetus keeps swallowing amniotic fluid in the mother’s body to exercise the respiratory function of the lungs. Hiccups have no adverse effect on the fetus and there is no need to worry too much. Fetal hiccups will move regularly in the mother’s abdomen, once every 2-3 seconds for 2-5 minutes, sometimes lasting 10-20 minutes. Touching the throbbing area with your hand, it is a bouncing motion, which is different from fetal movement. Pregnant women usually start self-monitoring of fetal movement at 28 weeks of pregnancy, according to the daily pattern of change of fetal movement and fetal waking and sleeping cycle, the domestic mostly used daily fixed 3 hours counting fetal movement method, that is, in the morning, noon and night every day to measure the fetal movement at a fixed time for 1 hour, the number of fetal movements will be added multiplied by 4, to get the number of fetal movements in 12 hours, fetal movement > 30 times is normal. If the fetal movement is too frequent or the fetal movement decreases, it is necessary to arouse the attention of pregnant women, and if necessary, they need to go to the hospital to do an electronic fetal heart monitor to know whether the fetus has a lack of oxygen.