BACKGROUND:　Inadequate　scaffolding　performance　hinders　the　clinical　application　of　the　biodegradable　zinc　alloy　stents.　OBJECTIVE:　In　this　study　we　propose　a　novel　stent　with　the　tenon-and-mortise　structure　to　improve　its　scaffolding　performance.　METHODS:　3D　models　of　stents　were　established　in　Pro/E.　Based　on　the　biodegradable　zinc　alloy　material　and　two　numerical　simulation　experiments　were　performed　in　ABAQUS.　Firstly,　the　novel　stent　could　be　compressed　to　a　small-closed　ring　by　a　crimp　shell　and　can　form　a　tenon-and-mortise　structure　after　expanded　by　a　balloon.　Finally,　0.35　MPa　was　applied　to　the　crimp　shell　to　test　the　scaffolding　performance　of　the　novel　stent　and　meanwhile　compare　it　with　an　ordinary　stent.　RESULTS:　Results　showed　that　the　novel　stent　decreased　the　recoiling　ratio　by　70.7%　compared　with　the　ordinary　stent,　indicating　the　novel　structure　improved　the　scaffolding　performance　of　the　biodegradable　zinc　alloy　stent.　CONCLUSION:　This　study　proposes　a　novel　design　that　is　expected　to　improve　the　scaffolding　performance　of　biodegradable　stents.