Fetus moving left and right side together usually has little to do with the position of the fetus. Especially in the middle of pregnancy, the baby is more active in the uterus, the left and right sides move together, indicating that the baby is more active in the uterus. Observation of fetal movement during pregnancy is a very important sign to determine whether the fetus is safe and sound, the left and right sides move together, generally has little to do with the orientation of the fetus, the need to count the fetal movement during pregnancy, and consult a doctor in time when there is an abnormality. Mid-pregnancy, the fetus is relatively small, in the uterus greater mobility, the position of the fetus is often not fixed. In late pregnancy, the fetus is larger and its position is relatively fixed, so it is more accurate to check the position of the fetus at this time. If malposition is found, timely correction is needed. If the fetus is still malpositioned at full-term delivery, it is relatively safe to opt for a cesarean section if necessary.