Fever: Because congenital heart surgery is mostly performed under open-heart and extracorporeal circulation, some children will still have fever after discharge. If the child eats well, eats milk vigorously, has no respiratory distress, and has no other discomfort, he or she can continue to be closely observed, and physical cooling can be chosen when the temperature is below 38.5 degrees. . Incision: Most children can have their stitches removed 7-10 days after surgery. The time to remove stitches is often extended to 10-14 days after secondary surgery and debridement and suturing, which still depends on the type of surgery and the speed of healing. The gauze covered at the time of discharge can usually be removed within two days, and the incision needs to be kept dry after the stitches are removed. Care should be taken not to allow the child to pull, scratch or rub the incision at will. If bleeding, redness, swelling or oozing occurs, prompt outpatient consultation should be made. Do not peel off the scab after surgery. Children with median incision can use chicken chest treatment device, and children with lateral incision need to actively carry out shoulder and back activities. After the scabs fall off, bathing is allowed, avoiding vigorous rubbing. Volume control: Most of the children with precordial disease need to control the volume of intake after surgery. Ask your doctor in charge when you are discharged from the hospital, the volume of intake for children is calculated according to their weight and varies from disease to disease. The outgoing volume should be basically balanced with the incoming volume, which can be slightly worse, but not too much, and if the urine volume is too low, it is necessary to take an additional diuretic. Postoperative review: All postoperative children need to be carefully reviewed, and the items to be reviewed include ECG, chest X-ray, cardiac ultrasound, etc. The time point and interval of review varies from disease to disease. Some simple precardiac disease radical surgery, such as atrial septal defect, ventricular septal defect, arteriovenous ductus arteriosus, etc., can be reviewed in 3 months after surgery, if the review effect is satisfactory, can be reviewed in one year after surgery, and then gradually extend the review interval, complex precardiac disease surgery at least once a year. For some children who underwent palliative surgery, such as bypass surgery, ring reduction surgery, GLENN surgery, etc., it is recommended to review in 1 month after surgery, and in 3 months and 6 months after surgery to clarify the timing of re-operation and the need to adjust medication according to the results of the review. Vaccination: Some common precordial diseases undergoing radical surgery, such as atrial septal defect, ventricular septal defect, arteriovenous catheterization, etc., can receive vaccination if the postoperative review is satisfactory and recovery is good at 3 months, and the timing of vaccination after some complex surgery and palliative surgery is recommended to be decided after communication with the doctor in charge.