Add complementary food in the normal order, and the baby can eat egg soup in seven or eight months. Generally, full-term newborns begin to add complementary food about four months after birth. At this time, rice flour can be added first. Egg yolks can be added in five or six months, and the egg yolks should be added gradually, from 1/4 egg yolks to 1/3, then to 1/2 egg yolks, and finally to one egg yolk. If the baby eats the whole egg yolk without vomiting, bloating and diarrhea, he can gradually increase the whole egg and give the child egg soup, which can be eaten between two meals of milk as a supplementary food for the baby.