AimTo discuss the concentration of sercum total bilirubin in the etiology of atherosclerotic thrombotic cerebral infarction.MethodsThe concentration of fast serum total bilirubin were compared in the group of atherosclerotic thrombotic cerebral infarction and control persons.ResultsIn the normal range of serum total bilirubin,the lower of serum total bilirubin, the higher of incidence of atherosclerotic thrombotic cerebral infarction.ConclusionIn the normal range, serum total bilirubin have a certain preventive effect for incidence of atherosclerotic thrombotic cerebral infarction.