The baby is always moving on the right side during pregnancy, which is a normal performance and is related to the fetal position. The right side should be the baby’s limb side, the amplitude and range of limb movement is larger, so it is normal to feel the right side always moving. The left side is the back side of the fetus, the range of activity is smaller and not particularly obvious, so you can’t feel the fetal movement. After the fetal position is fixed, the baby will move on one side and will not turn back and forth. Before the fetal position is fixed again, the fetal position may change and the location of the activity is not fixed. During pregnancy, you should pay attention to monitor the change of fetal heartbeat and fetal movement.