When a pregnant woman is sleeping, the fetus is not necessarily also sleeping, and there is no direct relationship between the sleeping conditions of the pregnant woman and the fetus. The nervous system of a pregnant woman does not have dominance over the fetus, so the sleeping time of the pregnant woman and the fetus are not synchronized. When the pregnant woman is sleeping, the fetus may be in a state of sleep, or it may be in a state of activity, and there may be fetal movement in the stomach. The fetus has its own independent nervous system and whether it sleeps or not is governed by its own nervous system. Pregnant women should pay attention to monitor the fetal movement, generally speaking, 3~4 times an hour fetal movement is normal, within 12 hours fetal movement generally occurs 30~40 times, if the fetal movement of obvious abnormalities, it is recommended to go to the hospital in time to consult a doctor, clear judgment of the cause and the corresponding treatment.