Typically patients undergoing single ventricle surgery are hospitalized for 14 days or more. Single ventricle is a rare form of cyanotic congenital heart disease in which the typical symptoms of the patient include dyspnea, limited mobility, and cyanosis. If the patient recovers well from single ventricle surgery, hospitalization is usually required for about 14 days. If the patient’s recovery is relatively unsatisfactory, the hospitalization time is usually longer than 14 days, but there is no specific clinical standard and it needs to be judged according to the patient’s condition. For single ventricle, surgical treatment is aimed at improving discomfort and prolonging survival time. Common palliative surgical procedures include arterial shunt surgery and pulmonary artery circumflexion, while definitive surgeries include total vena cava and pulmonary artery connection surgery, segregation surgery, and heart transplantation. Patients need to be evaluated by a doctor to choose the appropriate surgical procedure, and all post-operative care needs to be strengthened. It is recommended that people with single ventricle in need of surgery should consult a regular hospital for treatment, and pay attention to regular medical checkups after surgery in order to monitor the recovery of the body.