Eight-month-old babies allergic to milk powder, you can go to the hospital to check the allergens. Eight-month-old babies allergic to milk powder, usually to milk protein allergy, skin may appear eczema, manifested as cheeks, forehead, head, trunk and other parts of the red rash, accompanied by itching discomfort, diarrhea, vomiting and other symptoms. At this time, you can check the allergens, go to the hospital for allergen test, lactose intolerance test, to be able to diagnose the baby allergic to the food is milk powder. If the baby is allergic to milk powder, you can give the baby lactose-free milk powder, amino acid formula, deeply hydrolyzed milk powder, and then observe whether the baby has an allergic reaction after drinking these milk powder. If your eight-month-old baby is allergic to milk powder, you should go to the hospital in time to check the allergens and try to avoid contacting allergic substances.