There are two possibilities for the baby to be allergic to prawns at this age: one is that the baby is too young, and protein in prawns is allergic. Children can eat it after 3 years old, and there will be no allergic reaction. It is best not to eat hard-shell seafood within 3 years old; Two: it is a lifelong allergy to prawns. When I was a child, I was probably allergic because of my low resistance. When you grow up, your allergies will be slightly lighter and you will soon heal yourself. Shrimp allergy is not necessarily allergic to other seafood. It is best to add a small amount for the baby for the first time, and observe.