To　provide　a　reference　basis　for　the　structural　design　and　optimization　of　endovascular　stent　by　analyzing　the　flow　resistance　of　the　new　stent　with　triangle　cross-section　using　numerical　simulation　method,　and　finding　out　the　stent　structure　which　will　influence　hemodynamic　parameters.　Four　kinds　of　models　of　the　triangle　cross-section　bare　stent　were　constructed　in　infinite　flow　field　using　solidworks　software.　Numerical　simulations　of　the　four　models　were　performed　respectively　using　ANSYS　finite　element　software.　Steady　flows　and　transient　flows　in　these　models　were　studied.　Hemodynamics　data　in　the　four　models　were　collected,　such　as　the　flow　patterns,　the　distribution　of　pressure　and　the　flow　resistance　of　the　new　stents.　The　stent　with　triangular　wire　cross-section　can　be　applied　to　cover　aneurysm　cavity　because　that　resistance　of　blood　inflow　to　aneurysm　was　large　and　outflow　from　aneurysm　was　small.　Thus,　it　was　easy　to　outflow　than　inflow.　Thereby　blood　perfusion　and　flow　of　aneurysm　cavity　was　restrained,　and　the　pressure　of　aneurysm　cavity　was　reduced,　which　plays　a　certain　effect　on　the　treatment　of　aneurysm.　This　result　provides　some　instructions　for　the　design　of　stent　structure.