Usually, babies over 10 months of age can eat egg whites in moderation. It is important to note that the amount given at the beginning should be small so as not to cause a violent allergic reaction in the child. Babies under 10 months old have a very permeable intestinal wall, and the protein in egg white is highly allergic, so it can easily pass through the intestinal wall and enter the bloodstream, thus making it difficult for babies to digest or have allergic reactions. Therefore, in general, more than 10 months of babies can be fed egg white, because at this time the baby’s digestive tract function is basically well developed, and can be well chewed egg white, and digested and absorbed. After 10 months the baby can add egg white to supplement the nutrition, at first you can add 1/4 of the egg white, if there is no adverse reaction, you can add to 1/2 and gradually transition to the whole egg white. If the baby is found to be allergic, it is necessary to stop eating egg white immediately.