If the infant eats porridge containing granules too early, it may cause indigestion, leading to nausea, vomiting, bloating, diarrhea, and even bloody stools. In addition, it may cause choking and coughing, which may lead to aspiration bronchitis or pneumonia, or even suffocation in severe cases. If the baby is exclusively breastfed, it is recommended to add complementary foods after 6 months; for artificially fed babies, it is recommended to start adding complementary foods at least 4 months. If breast milk is not enough within 4 months, consider adding formula to avoid malnutrition due to low milk intake, which can affect normal growth and development. When infants are 4-6 months old, it is recommended to start adding complementary foods, starting with rice flour in small doses and as thin as possible. After the infant has eaten, parents need to carefully observe whether the infant has any symptoms of discomfort, such as perioral congestion and edema, rash, or adverse reactions such as vomiting or abdominal pain. If there is no discomfort, the dose of rice flour can be gradually increased and other complementary foods can be added.