According to the third meeting of the Adult Education Group of the Cholesterol Education Program of the United States（NECP-ATPⅢ），premature coronary artery disease（pCAD）is a disease diagnosed in men ＜55 years old and women ＜65 years old，which is a special form of CAD with multiple obvious family history．In recent years，with the increasing number of patients with pCAD，and the rapid development of single nucleotide polymorphism（SNP）and genome-wide association studies，the study of gene polymorphism related to premature coronary artery disease has become a hot topic．Several database were searched to collect relevant literature at home and abroad，and the research progress of gene polymorphism of premature coronary artery disease in recent years was summarized，and tried to provide new key research directions．
