Newborns spitting up watery liquid may be physiological, or pathological factors such as dyspepsia, esophageal atresia, etc. It is recommended that the cause be clarified in a timely manner and then treated according to the etiology. 1. Physiological: Due to the small stomach capacity of newborns, which is in a transverse position, there may be symptoms such as milk overflow or drooling just after feeding, and the situation of spitting out watery liquid is normal. It is recommended to elevate the head after eating milk to help relieve. 2. Indigestion: Too much breastfeeding at one time can burden the newborn’s gastrointestinal tract and cause indigestion, which can lead to spitting up of watery liquids and bloating, crying and other symptoms. You can improve the feeding method, or take medication such as bacillus subtilis under doctor’s guidance. 3. Esophageal atresia: It is a congenital developmental defect of the esophagus, which prevents it from entering the gastrointestinal tract after eating milk, and also leads to excessive secretion of saliva in newborn babies, which results in the symptom of drooling. In severe cases, it can also lead to respiratory distress, and you need to go to the hospital in time to see a professional physician to evaluate the tracheo-esophageal fistula surgery and other treatments. It is important to improve feeding practices and not to breastfeed too much at once. If you are suffering from esophageal atresia, you need to go to the hospital in time to get a clear diagnosis and regular treatment to minimize the adverse effects of the disease.