Babies’ gastrointestinal function is very weak and they can easily suffer from gastrointestinal indigestion, spitting up is very common, and they can easily spit up without indigestion. Common reasons for spitting up, such as too many feedings, too much milk, and easy to take in air when eating milk. After your baby has finished eating, hold him or her upright and gently pat him or her on the back to make him or her burp out, and usually pay attention to keeping the abdomen warm to avoid getting cold.