It is not recommended that children drink milk while lying down, because children who drink milk while lying down can choke on their airways, causing respiratory asphyxiation or aspiration pneumonia, which is not worth the risk. Children who lie down often suffer from gastroesophageal reflux (GERD), which increases the likelihood of spitting up. Children should be seated when drinking milk, and when lying down, the upper body should be elevated, which is more appropriate. In summary, children in general is not very suitable for lying down to drink, if the child’s body is weak or the spine is not fully developed, you can give the child the upper half of the body properly elevated to drink milk.