Babies are always spitting up and overflowing milk may be associated with incorrect breastfeeding posture, cold stimulation, indigestion or gastroenteritis and other reasons. 1. Incorrect breastfeeding posture: incorrect breastfeeding posture will make the baby feel uncomfortable when drinking milk, or choking and spitting milk overflow when drinking milk too quickly. 2. Cold stimulation: when the baby’s abdomen is cold, such as cold wind, drinking cold milk, etc., will stimulate the function of the gastrointestinal tract, stomach cramps and other phenomena, resulting in the baby spit up and overflow of milk occurs. 3. indigestion: babies drink too much milk, feeding too often, etc. will increase the burden on the baby’s gastrointestinal tract, which will lead to babies spitting up and spilling milk. 4. Gastroenteritis: Babies suffer from bacterial or viral infections, leading to inflammation of the gastrointestinal tract, resulting in spitting up and overflowing milk symptoms. If a baby’s symptoms of spitting up and overflowing are not relieved, or if they are accompanied by other symptoms, he or she should go to the hospital in a timely manner, so that he or she can be given targeted treatment after clarifying the cause.