Six-month-old babies are generally not recommended to eat egg custard, or egg yolk-based. Egg custard usually contains egg white and egg yolk, baby 6 months old when the gastrointestinal function development is not perfect, generally recommended to egg yolk-based, egg white to be added after the baby is 1 year old, that is, after 1 year old then eat egg custard. Babies eat egg yolk for the first time, should start from a small amount, such as from half an egg yolk to start adding, observe the child after eating there is no allergy, nausea and vomiting, bloating and diarrhea and other adverse reactions, such as the baby can accept can then be increased appropriately, such as the emergence of related adverse symptoms should be stopped immediately and seek medical attention in a timely manner. Egg yolks can give the baby supplemental nutrients, but to avoid excessive intake, so as not to cause nutritional excess or indigestion and so on.