Frequent change of milk powder usually has impact on babies, such as easy to cause gastrointestinal diseases, anorexia, allergies and other conditions. 1. Gastrointestinal diseases: frequent change of milk powder may stimulate the baby’s gastrointestinal tract, indigestion, diarrhea and so on, which is related to the function of the baby’s gastrointestinal tract is not well developed. 2. Anorexia: the baby is used to the taste of the previous milk powder, if the frequent change of milk powder, the baby needs to re-adapt to the new milk powder, some babies will also produce anorexia. This is mainly because the taste of different milk powder is not the same, some taste difference is big. So some babies will reduce their milk intake because of the frequent change of milk powder. 3. Allergy: The same brand of milk powder, milk source, formula, process are not the same, frequent change of milk powder may also lead to the baby allergic situation. Frequent change of milk powder may have other effects on the baby, it is recommended not to change milk powder frequently. If any abnormality occurs, please go to the hospital in time.