Infants with slow development of congenital heart disease need to look for the cause of developmental delay, if the developmental delay is caused by congenital heart disease, usually can first strengthen the feeding. If growth and development are seriously affected, surgery can be performed at a later date. If the infant is due to congenital heart disease and affect the growth and development, such as the infant physical, weight, height, etc. are significantly behind children of the same age. The degree of backwardness is not obvious or only slightly behind, generally can first strengthen the feeding, if necessary, can follow the doctor’s advice to use high calorie milk for feeding. If growth and development are severely affected, surgery can be performed at a later date after evaluating the risks and benefits of surgery. If the infant has congenital heart disease combined with serious clinical manifestations, it is recommended to consult a doctor for timely treatment. In daily life, feeding can be strengthened under doctor’s guidance for catching up growth. In addition, it is also necessary to regularly review the cardiac ultrasound, to understand the heart condition, if the symptoms worsen, can be timely cardiothoracic surgery consultation, in accordance with the doctor’s instructions for targeted treatment.