Lying on the stomach is also called prone, infants often lie on their stomachs in the process of growth can promote the practice of lifting, turning the head, crawling and other movements, at the same time can exercise the muscle strength of the neck, back and limbs, and can be exposed to the surrounding environment early, to promote the development of the nervous system. At first, you can put the baby on a flat, clean blanket, put a soft pillow across his chest (under both arms), bend the baby’s arms forward, and let him get used to lying on his back. At the same time, gently stroke the infant’s back from the shoulders down while he is lying on his back to make him feel comfortable lying on his back. During practice, you can also use sound toys to attract your baby’s attention and exercise him to lift his head, turn his head, and crawl forward. Be careful not to practice for too long, and if you find any abnormalities, consult a doctor for a detailed examination.