Allergy has become one of the biggest health concerns for infants and young children. A variety of baby health problems such as eczema, diarrhea, constipation, milk vomiting, and crying are more or less related to allergies. Nestle’s survey shows that one in ten babies worldwide suffers from food allergies . In China, the food allergy rate of infants and young children is estimated to reach 14.1%, and the number of allergies is increasing year by year . Nutritional products addressing children's food allergies are one of the categories with great growth potential in the Chinese market.