The causes of milk overflow in infants include physiologic and pathologic, and should be treated according to the cause with back patting, medication and other treatments. 1. Physiological (1) Improper feeding: if artificial feeding, too fast feeding and too much milk can cause spitting up. The main treatment is to avoid feeding too fast, too much. (2) Infants’ own physiological characteristics: although the swallowing function of infants has been perfected, their lower esophageal sphincter is loose, the stomach is in a horizontal position, and the pyloric sphincter is more developed, so it is easier to overflow milk or even vomit. The main treatment is that after feeding, you can hold the baby upright and pat the back. 2. Pathological: some digestive diseases can also cause milk overflow in infants. For example, congenital hypertrophic pyloric stenosis should be treated with nutritional correction and pyloromyotomy, etc. Gastrointestinal infections can be treated by adjusting diet and applying antibiotics such as cefixime. If there is any discomfort, it is recommended to consult a doctor in time for diagnosis and treatment. The use of specific drugs should be under the guidance of a doctor.