According to the complexity of cardiac malformations, they can be divided into simple and complex precardiac diseases; according to the number of malformations, they can be divided into single and compound malformations; according to the morbidity, they can be divided into rare and common malformations. Common malformations include atrial septal defect (ASD), ventricular septal defect (VSD), and patent ductus arteriosus (PDA), all of which are left-to-right shunt malformations. They can be asymptomatic, without cyanosis, and can be detected early on physical examination. Current treatment options are interventional occlusion (minimally invasive) and surgical procedures. Tetralogy of Fallot is also a common malformation, but is a complex malformation. The child has cyanosis, which is easily detected early and easily diagnosed. Surgery is currently based on the development of the pulmonary artery and right ventricle.