Basis　on　the　method　for　the　analysis　of　strain　in　the　arterial　wall　[16],　four　common　carotid　arteries　were　analyzed　in　the　constitution.　YC　Fung＇s　seven　parameter　constitution　of　arterial　walls　were　used　for　stress　analysis.　It　was　assumed　that　arterial　walls　are　homogeneous,　anisotropy,　and　incompressible.　The　experiment　of　mechanical　properties　of　arterial　walls　was　done　on　the　experimental　device　designed　by　ourselves.　The　seven　parameters　of　constitution　were　calculated.