Objective:　To　compare　and　analyze　the　mechanical　performance　of　a　new　biodegradable　stent　and　a　common　stent　and　their　effects　on　treating　the　stenotic　vessels.　Methods　Using　finite　numerical　simulation,　the　new　stent　and　the　common　stent　were　implanted　into　vessels　with　a　diameter　stenosis　of　30%,　and　their　support　performance　and　influences　on　reshaping　the　stenotic　vessels　were　investigated.　Results:　The　radial　recoiling　ratio　and　dog-boning　ratio　of　the　new　stent　were　decreased　by　26.6%　and　34.7%,　respectively,　compared　with　the　common　stent.　Besides,　the　stenotic　vessel　deployed　with　the　new　stent　recoiled　less　and　had　a　flatter　and　larger　lumen.　Conclusions:　Compared　with　the　common　stent,　the　new　stent　has　stronger　scaffold　performance　and　a　better　therapeutic　effect　on　stenotic　vessels.　The　new　stent　with　stronger　scaffold　performance　is　highly　expected　to　be　an　alternative　choice　in　interventional　surgeries.　Copyright　©　2019　by　the　Editorial　Board　of　Journal　of　Medical　Biomechanics.