Cardiogenic syncope is the relatively common type of syncope in children. The state of illness is more serious at the onset,the prognosis of partial patients is very dangerous,even it can cause cardiac sudden death, so clinical doctors pay close attention to cardiogenic syncope. The common pathogeny of cardiogenic syncope in children includes serious arrhythmia, obstruction of the outflow tract of heart, restricted diastole of heart or weak systole of heart. Before the particular cause of disease is determined,some examinations and laboratory tests should be made. In this article, the writer introduces detailed methods of the emergent treatment.