Baby’s face is big on one side and small on the other side can be improved by adjusting the sleeping position and adopting the supine position. 1. Adjust the sleeping position: the baby needs to change the direction of the previous sleeping position, if used to sleep with the face facing one direction, need to be switched to the other side. When sleeping on the side, care should be taken not to squeeze the auricle. A towel can be placed on the head and neck to provide a fixed support. 2. Adopt the supine position: If the situation of one side of the face is big and the other side is small has been improved, it is best to adopt the supine position for sleeping, so that both sides of the face can be fully developed. At the same time, observe your baby’s condition more often and change the sleeping position frequently to prevent head deviation and facial asymmetry. If there is obvious asymmetry between the two sides of the face, it is best to have a bone examination. If the symptoms do not improve, it is best to consult a doctor in time.