After four months, the baby can gradually start to add complementary food. However, due to the developmental characteristics of the baby's digestive system, the principle of adding complementary food should follow from less to more and from dilute to thick. It is best to add fruit juice and vegetable juice first, and then add rice soup and egg yolk after the baby gets used to it.

1, starting with food with low allergy and light taste.

2. feed only one new food at a time, starting from a small amount, and the concentration of food should also be from thin to thick.

3. Every meal starts with a new food. If you don't want to eat, add the food you have already eaten, and add a new food in about 5-7 days.

Add rice flour or rice soup in 4.6 months, add grains and roots in 7-8 months, and start to try various leafy vegetables and fruit purees. You can start adding meat in eight months.