Objective: To analyze the relationship between arteriosclerosis index(AI) and clinical menifestation in elderly with lower limb atherosclerosis. Method: One hundred and twenty three cases of elderly patients with lower extremity arterial disease were used for distinguishing the Traditional Chinese Medicine(TCM)Syndrome pattern

detecting serum lipids levels

and calculating the AI. Result: Three kinds of syndrome such as blood stasis

spleen-kidney yang deficiency syndrome

dampness heat syndrome is more common all with low level high-density lipoprotein cholesterol (HDL-C)

the levels of total cholesterol(TC) and arterial hardening exponent in blood stasis and dampness heat syndrome patient were higher than that of spleen and kidney yang. Conclusion: Blood stasis and dampness heat syndrome in lower extremity atherosclerosis patients was more severe than patients with spleen deficiency type. AI can be used as subjective index of reference for distinguishing syndromes of blood stasis from damp-heat syndrome.