There are many reasons why babies cry when they eat milk. First of all, you have to check if there is herpes in the baby’s mouth, if there are ulcers or other reasons for the mucous membrane to break. If the pacifier touches the broken mucous membrane, it will cause pain. In this case, your baby may cry when he or she eats milk, so you should treat your baby’s oral disease first in time. During the treatment, you can feed the baby with a small spoon to relieve the pain. You also need to check if the pacifier is too big or too small. A pacifier that is too big will cause milk to flow out too fast and the baby will swallow uncoordinated, which will easily lead to choking and cause discomfort, and a pacifier that is too small will make it difficult for the baby to suck on the milk, which will also cause the baby to cry due to hunger. Some children are also impatient, and when they can’t find their mother’s nipple, they will get angry, fume, cry and refuse to eat breast milk. At this time, the mother does not need to force, just pick up the baby and soothe him for a while, patiently guide him to find the nipple, and then breastfeed. It is normal for babies to cry when they are too sleepy and want to sleep, so parents should not worry.