At 4-5 months of age, your baby will roll over. You can tease your baby with toys of interest on his or her side to promote rolling over. If the baby has no desire to turn over, or if the head and shoulders are tilted back during the occurrence and cannot turn over normally, and if there are high-risk factors before, during or after birth, such as prematurity, low birth weight, hypoglycemia, hypoxic-ischemic encephalopathy, etc., take the baby to the pediatric rehabilitation department for examination and give the necessary early intervention and rehabilitation treatment. Turning over is an extremely important large movement that requires the joint participation of the head, shoulders and pelvis.