If the baby is breastfed, the mother needs to avoid eating when the baby develops pneumonia. The mother’s diet should be light and should not eat high-calorie, high-protein foods, such as spicy, greasy, cold, hard foods, or seafood products, because an unreasonable diet can aggravate the baby’s pneumonia symptoms through breast milk or be detrimental to the improvement of pneumonia. In particular, cold and hard foods can cause diarrhea, bloating and vomiting in babies. You should also avoid diets such as ribs and carp soup, and don’t eat sweets, which may aggravate your baby’s cough. The best diet for your baby’s pneumonia is mainly porridge, with appropriate vitamin-based fruits and vegetables, so that your mother can resume a normal diet when your baby’s pneumonia improves.