Generally speaking, you can add egg yolk as a complementary food when your baby is around 10 months to 12 months old. Babies 10 months to 12 months, swallowing, chewing ability and the digestive tract of the absorption ability are gradually developed and enhanced, this time to add egg yolk supplemental food, generally will not cause a burden on the baby’s gastrointestinal tract, but also not easy to cause allergies. To add egg yolk complementary foods for babies, it is recommended to make egg yolk porridge or crushed egg yolk, convenient for babies to eat, but also easier to digest and absorb, or in the baby to eat rice flour, mixed with some egg yolk to the baby to eat. Egg yolk complementary food to follow the principle of less to more, you can first add 1/4 egg yolk to the baby, if there is no adverse reaction, and then gradually increase the amount. If there is no adverse reaction, then gradually increase the amount. If there is allergy and other discomforts, immediately stop adding, and if necessary, consult a doctor.