Atherosclerotic complications, including coronary heart disease and stroke, are the main cause of human death. Up to date, it is assumed that atherosclerosis is an inflammatory vascular condition, and certain infectious disease may cause the burst of atherosclerosis and possibly be part of its risk factors. Periodontitis, perceived as an infectious disease induced by bacteria, is one of the major cause of oral infection and has also been proved to contribute to the pathophysiology of atherosclerosis via direct or indirect invasion of periodontal pathogens in recent years. This article was to review relevant literatures which are associated with the cross link of preclinical atherosclerosis and periodontitis. The common etiologic risk factors of these two diseases will be discussed and be elucidated their possible links. We try to high light the debated points and construct an assumption for the construction of a longitudinal clinical or wet laboratory investigation in the near future.