Congenital heart disease (CHD) constitutes one third of all major congenital abnormalities and is often associated with malnutrition and failure to thrive in children. The nutritional status of CHD patients experienced a significant improvement after correction. Congenital heart disease is divided into two groups, namely cyanotic CHD and acyanotic CHD. Cyanotic CHD is a heart disease in children which is characterized by central cyanosis due to a shunt from right to left, whereas acyanotic CHD in children is not characterized by cyanosis and has a leak in the heart septum accompanied by a shunt or not. Malnutrition is a major challenge that is estimated to affect 50-90% of children with CHD in developing countries. Congenital Heart Disease can also cause moderate to severe malnutrition. Children with acyanotic CHD can experience complications in several organ systems and the respiratory system is the most important complication. Lower respiratory tract infections are the main reason for morbidity and mortality, prolonged hospital stay, respiratory failure, prolonged use of mechanical ventilation, and delayed definitive surgery.