Babies with protein allergy add complementary food with starchy food and vegetables and fruits. After adding complementary foods, pay attention to observe whether the baby has any uncomfortable symptoms. 1. Starchy foods: If your baby is allergic to protein, try to avoid adding protein foods, such as eggs and meat, when adding complementary foods. You can let the baby eat some starchy food, such as rice, noodles, rice paste and so on. 2. Vegetables and fruits: protein allergic babies can try to add more fresh vegetables and fruits, such as vegetable puree, fruit puree, fruit juice and so on. 3. Pay attention to observe the baby’s symptoms: after adding complementary foods to the baby, we should pay attention to observe the baby after eating complementary foods whether there will be special uncomfortable symptoms, such as constipation, abdominal pain, skin rashes and other allergic reactions. Protein allergy baby to add supplemental food as far as possible to avoid adding food containing protein to avoid lead, so as not to cause the baby allergic symptoms. Complementary foods should follow the principles of from small to large, from fine to coarse, from thin to thick, from soft to hard, from one to many, and at the same time, we should pay attention to observe the symptoms of the baby after adding complementary foods, and consult a doctor as soon as possible if the baby has special discomfort after adding complementary foods.