In principle, children with congenital heart disease need the same nutrition as children in general, including protein, carbohydrates, and minerals to help them grow and develop. Some infants with congenital heart disease may have the following problems when eating: slow eating; shortness of breath or difficulty in breathing when eating; increased sweating; vomiting easily; these phenomena occur because the infant’s heart structure is defective leading to heart failure, the most common symptom is difficulty in breathing, so that the infant needs more oxygen and energy to maintain breathing, and they are more likely to suffer from respiratory diseases, such as colds and pneumonia. In addition, they are more likely to suffer from respiratory illnesses such as colds and pneumonia, resulting in a lack of energy when eating and longer feeding times than other infants. Because infants take time to eat or because of water restrictions, they do not eat enough, which can lead to nutritional deficiencies in the long run. Parents must be patient and learn how to cope with the problem and improve their infant’s nutrition and diet. If the infant has no energy or uses too much energy to suck, consider using a syringe or spoon instead of a pacifier, or even a gastric tube if necessary, as directed by a nurse. If the infant is digesting and absorbing well, nutritional powders can be added to breast milk or formula, as appropriate, after the doctor has evaluated the condition. Some infants are prone to vomiting after eating. In fact, this can occur in healthy infants as well, probably due to reflux from the esophagus. If the infant is not sick but continues to vomit, the doctor may give medication or add a special substance to the formula to thicken it and reduce the frequency of vomiting. The best position after feeding is to lie on the right side with a small pillow on the back to help the milk flow from the esophagus to the stomach after feeding. In addition, try not to harass the baby after feeding to reduce the chance of vomiting. It is common for children with congenital heart disease to suffer from poor appetite, fluid retention and heart failure after surgery. Therefore, in terms of diet and nutrition after congenital heart disease surgery, the following is recommended: 1. Diversify and balance nutrition. In the early post-operative period, some children may have poor appetite due to wound pain or fatigue, but these are usually transient in nature. Parents can try to give more easily digestible food, such as nutritious porridge, minced meat porridge or rice flour. Parents can provide a variety of recipes according to the child’s preference to increase the child’s appetite, but must give balanced nutrition, avoid partial food, and do not eat too much salt food. 2. Limit water intake. After most heart surgeries, doctors still restrict the amount of water children can drink daily to reduce the chance of fluid accumulation in the heart and lungs. In general, children after heart surgery do not need to avoid special food, except for special conditions. 3. Small and frequent meals. Some children who have undergone heart surgery still have heart failure, shortness of breath, lack of oxygen or recurrent pneumonia, etc. This is because the child has only undergone surgery to relieve the symptoms and the heart defect has not been completely corrected, so the feeding situation may not be improved. If the infant is unable to suckle due to shortness of breath, spoon feed or feed in several divided meals, i.e., small and frequent meals. Parents should continue to help their children with perseverance and patience and, if necessary, with guidance from their health care provider and dietitian to improve their children’s nutrition.