It usually takes 30 minutes for a baby to lie down after feeding. Babies should not lie on their backs immediately after feeding, it usually takes 30 minutes before they can lie on their backs, and if they lie on their backs immediately after a full meal, they may spit up. If the baby’s age is young, the spitting up may be due to accidental inhalation of vomit, which is a more critical situation. Therefore, it is recommended to burp the baby upright after feeding, gently patting the baby’s back to expel air and prevent the phenomenon of spitting up. In addition, the baby’s posture needs to be adjusted and restricted after feeding to prevent serious consequences. Pay attention to the amount of breastfeeding in your normal life, and if any uncomfortable symptoms occur, you need to go to the hospital in time for treatment.