1. What are the reasons why babies spit up milk? It is very common for babies to spit up milk, but there are many reasons for this phenomenon. It may be that the feeding method is incorrect, or it may be that the digestive system is not fully developed, etc. In addition, it may be caused by the baby\’s overreaction. 2. Is the feeding method correct? If the mother\’s posture is incorrect when breastfeeding, or the shape of the bottle is inappropriate, it will cause the baby to spit up milk. In addition, if the mother is too impatient or nervous during breastfeeding, the baby will spit up milk. 3. Imperfect digestive development? Because digestion is not fully developed