Fetal movement in pregnancy may be related to the fetus is in the sleep state, individual differences in the fetus, fetal intrauterine growth restriction, fetal hypoxia and other reasons, need to be analyzed specifically. 1. Fetus is in sleeping state: Fetus will absorb nutrients more effectively and develop as soon as possible only in the process of sleeping, so the fetus is also in the mother’s body has a certain movement and sleeping pattern. If the fetus is in sleeping state, the fetal movement will be relatively reduced. 2. Individual differences of the fetus: If the fetus has been moving less and the fetal heart rate monitor and other examinations are normal, it may be caused by individual differences of the fetus and there is no need to worry too much. 3. Fetal intrauterine growth restriction: If there is fetal growth restriction during pregnancy, it may also lead to decreased fetal movement. 4. Fetal hypoxia: factors such as umbilical cord entanglement and abnormal placental function can affect the oxygen supply to the fetus, resulting in decreased fetal movement. There may be other reasons for low fetal movement in pregnancy. If there is low fetal movement, the pregnant woman should go to the hospital for examination in time to find out the reason for the reduced fetal movement and get the right treatment according to the actual situation.