The baby sleeps on milk generally belongs to the normal physiological phenomenon, do not have to worry too much, mostly because the brain development of infants and young children is not yet perfect, easy to fatigue, love to sleep on milk. The baby just after eating milk, the general blood flow to the digestive tract will be more, resulting in reduced blood supply to the brain, resulting in easy to sleep; at the same time, because the baby’s own brain development is not perfect, the nerve cells and other excitability is low, so easy to fatigue, resulting in the baby loves to sleep. For this phenomenon, generally do not need to worry too much, mostly normal physiological phenomenon. For the baby’s sleeping time, generally the younger the age, the longer the baby’s sleeping time. It should be noted that, with the above phenomenon, but also pay attention to observe the baby’s situation, if the mental state, the amount of milk, development are normal, generally not a big problem. If there are obvious abnormalities, active diagnosis and treatment are needed.