Symptoms of a baby not drinking milk or breastmilk can be caused by incorrect breastfeeding, mouth sores, indigestion and other factors. 1. Incorrect breastfeeding: If you breastfeed your child frequently for a short period of time, it can lead to overfeeding and cause your child to reject milk or breastmilk. Or the incorrect posture of breastfeeding the baby will also cause the child to be uncomfortable, so that the child does not drink milk or breast milk. 2. Mouth sores: babies may come into contact with bacteria, fungi and other pathogenic microorganisms when eating, playing and other infections, resulting in the oral mucosa being attacked, which can cause congestion and edema of the soft tissues in the oral cavity, pain and other symptoms. In turn, the baby will not want to drink milk and breast milk. 3. indigestion: if the baby has indigestion, gastrointestinal tract dysfunction, will also affect the baby’s eating situation, resulting in the baby does not eat breast milk and milk. In short, there are many reasons why babies do not eat milk and breast milk, if the symptoms persist, then go to the hospital immediately.