Abstract: Syphilis may affect the cardiovascular system, in which coronary arteries are less commonly involved. Familial hypercholesterolemia (FH) is an autosomal dominant inherited disease with elevated low-density lipoprotein-cholesterol (LDL-C) levels due to impaired LDL-C clearance. We report a young male patient with syphilis and FH. The clinical manifestations were acute myocardial infarction and high LDL-C levels. Coronary angiography and intracoronary imaging showed multiple aneurysmal ectasia and stenosis. A drug-eluting stent was implemented when recurrent restenosis occurred after two percutaneous coronary drug-eluting balloon angioplasties.