Perioperative care for children with precardiac disease is very important and is one of the key factors in the success of surgery, involving multiple organs and systems, including: cardiovascular system, respiratory system, nervous system, digestive system, renal function, electrolyte imbalance, and many other aspects. (1) Postoperative cardiovascular system care: Clinically, a child can be presumed to have appropriate cardiac output based on normal arterial and venous blood gas analysis indicators, warm extremity endings, and normal urine volume. Monitoring parameters of the cardiovascular system include heart rate, heart rhythm, blood pressure, central venous pressure, left atrial pressure, pulmonary artery pressure, cardiac output, etc. (2) Postoperative respiratory care: Respiratory dysfunction caused by multiple factors after cardiac surgery leads to prolonged postoperative course, increasing hospitalization costs and the difficulty of treatment and care. Commonly used monitoring methods include earlobe and terminal arterial oxygen saturation of the extremities, X-ray chest radiographs, and monitoring of tidal volume, ventilation volume, airway pressure, airway resistance, etc. when the ventilator is applied. (3) Postoperative pulmonary care: The pediatric respiratory system has its unique physiological characteristics, and postoperative pulmonary infections, pulmonary atelectasis and other complications may easily occur, resulting in pulmonary insufficiency and affecting the recovery of cardiac function. Regular turning, position change, back patting and nebulized inhalation are effective care to prevent pulmonary complications. For children who have developed pulmonary complications, physical methods including postural drainage, back patting, tremor, instruction of effective coughing and suctioning to clear airway secretions can be used for treatment. (4) Postoperative neurological care: Extracorporeal circulation surgery is sometimes complicated by diffuse or limited brain injury, the severity of which can be reversible or organic damage, and is one of the serious postoperative complications. Perioperative cooling measures are important for preventive care. (5) Postoperative digestive system care: postoperative cardiac disease due to anesthesia, extracorporeal circulation, sedation, inotropic drugs, emergency reactions, etc., the digestive system of children may have different degrees of impairment, with diarrhea being the most common, dietary structure adjustment, avoidance of fatty foods, the use of drugs to regulate intestinal flora are effective nursing measures. If parents have any other questions about their children’s post-operative care, they can always leave a message on the Internet, or choose to consult by phone if they need one-on-one communication with me.