Treatment modalities for complex congenital heart disease: direct surgical view surgery, echocardiography-guided surgery and x-ray-guided surgery. Surgery is divided into: palliative surgery, radical surgery and staged surgery. Complex congenital heart diseases that can be treated include: complete transposition of the great arteries, corrected transposition of the great arteries, double outlet of the right ventricle, pulmonary atresia, tricuspid atresia, inferior displacement malformation, ectopic drainage of the pulmonary veins, tetralogy of Fallot, and complete endocardial cushion defect. Complex malformations that can be radically treated according to the development of the ventricles and pulmonary arteries or through ventricular training: tricuspid valve subluxation malformation, pulmonary vein ectopic drainage, tetralogy of Fallou, complete endocardial cushion defect, complete transposition of the great arteries, corrected transposition of the great arteries, double outlet of the right ventricle, pulmonary atresia. With the development of science and technology, the continuous innovation and improvement of new surgical methods, the use of new materials, surgeons challenge complex deformities, surgery that they did not dare to do in the past now dare to do, deformities that could not be cured now reach complete anatomical correction, and the results are getting better and better, grasp the best time for disease treatment, reasonable or orderly medical intervention, depending on the condition can be a one-time cure, in two stages treatment or three-stage treatment, with anatomical correction as the goal, to improve the quality of survival. It is believed that more complex malformations can be cured in the near future to benefit the majority of children with the disease.