It is recommended to add egg yolks to complementary foods and then consume them daily. According to the Dietary Guidelines, egg yolk products can be added gradually after babies are given complementary foods. After adding egg yolk, if there is no nausea, vomiting, abdominal pain, abdominal distension adverse reaction, then you can add an egg yolk every day. Egg yolk is rich in nutrients, each 100 grams of egg yolk contains 317 calories, of which 3.59 grams of carbohydrates, 15.87 grams of protein, 26.54 grams of fat, cholesterol 1,234 milligrams, 129 milligrams of calcium, 2.73 milligrams of iron. Meanwhile, egg yolk also contains more vitamin A, folic acid and other nutrients, which can provide a diversified source of nutrients for the baby’s healthy growth, which is conducive to physical health and growth and development. The proteins in egg yolks are animal quality proteins and the fats are high quality fatty acids containing more lecithin. Although the cholesterol content is high, it is also a necessary nutrient for the growth and development of babies, so it is recommended to add an egg yolk every day to ensure that the child’s growth and development of the necessary nutritional requirements. Complementary foods should be added gradually from less to more. If your baby experiences any discomfort during the process of adding complementary foods, it is recommended that you seek prompt medical attention and receive professional guidance from a pediatrician. Babies who are allergic to eggs should not consume egg yolk.