After surgery, parents are afraid that the child’s nutrition will not be enough to affect the recovery of the body, so they will try every possible way to give the child more food; there are also many children due to the success of surgical correction, heart function has been improved, postoperative obvious performance of appetite, always feel full, for these children, especially small infants if not pay attention to an excessive amount of food led to the expansion of the stomach cavity, diaphragm elevation, affecting breathing will increase the burden on the heart, which is not conducive to the function of the heart The recovery of heart function is not favorable. In some children with cardiac insufficiency, bed rest and reduced activity, coupled with stasis of blood in the liver and gastrointestinal tract, low appetite and digestive capacity can easily lead to abdominal distension, which can also lead to diaphragmatic elevation. After surgery, for children whose heart function is still in the recovery stage, there will be too much water in the intake and water retention in the body, resulting in an increase in systemic blood volume, which directly increases the burden on the heart and makes cardiac insufficiency more aggravated. Therefore, it is recommended to adopt a semi-recumbent position when eating after preoperative surgery, and it is most important to eat less and more meals, increase the intake of hunger-resistant foods (such as rice flour in formula), and control the intake of salt and water according to the status of cardiac function. Strictly speaking, the amount of food for children in the early postoperative period is determined by the age and weight of the child, urine output, and cardiac function. Parents should not blindly feed their children too much, but should feed them reasonably under the guidance of medical personnel. Diet guidance: small amount, many times, light, depending on the urine volume and heart size.