Aim To investigate the correlativity of carotid artery elasticity and coronary arterial stenosis. Methods 100 subjects who underwent coronary angiography(CAG) were subject to a contemporary examination of ET examination(<15 days).According to the results of CAG,the subjects were divided into four groups,normal,single-branch lesion,two-branch lesion(including left aim branch) and multi-branch lesion.The parameters of carotid elasticity,stiffness parameter β(β),pressure strain elastic modulus(Ep),arterial compliance(AC),were measured by ET technique,and the correlativity of carotid artery elasticity and coronary arterial stenosis was studied. Results The parameters of the carotid elasticity,β,Ep and AC,changed with the development of the coronary heart disease(CHD).Compared with normal subjects,elasticity of the carotid arteries was even worse in CHD patients,especially in multi-branch lesion group.There was no statistical difference in carotid elasticity among normal group,one-branch lesion group and two-branch lesion group.The carotid elasticity decreased more in multi-vessel lesion group than other groups. Conclusions There is a close correlation between carotid elasticity and coronary stenosis.The parameters of carotid elasticity measured by ET(β,Ep and AC) can be used to predict the degree of the coronary stenosis,suggesting their potential roles in distinguishing different risk levels for CHD.