Objective: To study the correation between carotid artery atherosclerosis and coronary heart disease (CHD). Methods: Color Doppler flow imaging was employed to evaluate carotid artery atherosclerosis in 90 patients with CHD, carotid artery ultrasonography and coronary angiography were performed simultaneously in 20 cases. Results: The thickness of internus-middle membrane and the index number of atheroma both increased remarkably in all cases, and the group with MI had obvious abnomal parameter of blood stream in internal carotid artery. The conformed rate of coronary angiography with ultrasonography in carotid is 75 % in 20 cases,and the moreserious the pathological change of coronary is, the higher the happening rate of carotid artery atherosclerosis is. Conclusion: The degrees of carotid artery atherosclerosis can reflect the degree of pathological changes of coronary indirectly.