The principles of postural placement are to avoid incorrect postures, to promote symmetrical development of the newborn’s body, and to keep the limbs in a midline flexed position to promote the development of hand-oral coordination and improve self-soothing. Relevant studies have shown that correct body position placement is very important for the development of the newborn and will bring many benefits to the newborn, including the influence of external stimuli for more perception; the newborn can acquire developmental skills such as head and eye control, and upper and lower limb function sooner. At-risk infants within the first month of life often tend to have their limbs in an extended position due to lack of muscle tone; prolonged exposure to this position can lead to impaired musculomotor development in at-risk infants, which can lead to malformations in severe cases. Therefore, proper postural control is essential in the prevention of developmental malformations.