Infants can normally lie on their stomachs 2 days after birth, but do not lie on their stomachs for too long, it is recommended that 2-3 minutes or so, and need to be accompanied by parents. Because the infant was just born, the cervical spine is not well developed, so do not let the infant lie on their stomach too early, so as to avoid injury to the cervical spine of the infant. Practice lying down, we must pay attention to the baby’s safety, to avoid the baby’s head can not be lifted to cause suffocation, choking phenomenon; with the increase in the age of lying down time can gradually increase, but, it is recommended that the baby in the hungry, just after eating milk and sleep at night do not lie on the ground, easy to spit up, choking phenomenon. And, 1 month or so lying down can practice lifting the head, 2 months or so when most babies head can be completely lifted up, as the baby gradually grows up, lifting the more stable.