Trembling like indicates that the fetus in the uterus movement is more active, as long as the number of fetal movement is normal there is no need to worry too much, if the abnormal fetal movement exists in the uterus hypoxia and other conditions, the need for timely oxygen, or to prepare for delivery as soon as possible. Fetus in the uterus of pregnant women will have different activities, when the fetal activity is more intense, pregnant women will feel obvious fetal movement, showing like trembling, if the number of fetal movement per minute for 3 ~ 5 times is normal. Pregnant women need to observe the number of fetal movements, if the number of fetal movements is abnormal, it means that there is intrauterine hypoxia in the fetus. Positive intervention is needed to prevent fetal asphyxia by administering oxygen in a timely manner and, if necessary, performing a cesarean section. When pregnant women find abnormal fetal movement, they need to consult a doctor in time to check the fetal heart, determine the development of the fetus in the uterus, and take the next step of intervention under the guidance of the doctor.