There are more reasons for vomiting from formula milk, which may be related to physiological reasons, common cold and allergy. 1. Physiological reasons: it may be that the baby is young, the cardia is not well developed, the pylorus is well developed and the capacity of the stomach is small. If the baby eats too much milk powder, it is easy to overflow and vomit. 2. Common cold: Due to respiratory viral infection, it causes common cold, which may also cause vomiting and is accompanied by fever and other symptoms. 3. Protein allergy: If the baby often vomits after drinking milk powder, and the nutritional status is poor, and often have eczema and so on. It may be that the baby is allergic to milk protein, and mucous blood stools will appear in the later stage. The reason for the vomiting of milk powder can also be seen in other reasons, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions for the relevant examination, with the help of the doctor to clarify the cause, and targeted treatment or treatment.