The correct time to add complementary foods for 6-month-old infants is between feedings, with the amount gradually increasing from less to more, from soft to hard, from one to many, until it replaces one feeding. When adding complementary foods for 6-month-old infants, do not overfeed at one time, but gradually increase the amount from less to more. Because the gastrointestinal function of infants is still not well developed, if the supplemental food is fed too much at one time, it will easily lead to indigestion. When feeding 6-month-old infants complementary foods, the order should be from soft to hard, first puree the complementary foods, gradually transition to crumbs, and then gradually transition to easy-to-digest foods. It is best to add one type of food at a time, and switch to another type of food after observing that the infant can tolerate it and has no adverse reactions such as allergies. The amount of complementary foods should be increased gradually, and the addition of complementary foods should not be a substitute for breastfeeding, but can gradually replace one breastfeeding in the process of gradually increasing complementary foods.