With　the　continuous　development　of　biomedical　materials,　biopolymer　materials　suitable　for　3D　printing　have　attracted　more　and　more　attention　from　scientists.　Especially　in　the　case　of　urethral　stricture,　the　traditional　urethral　dilatation　is　not　only　badly　treated　but　also　the　patient　will　suffer　great　pain.　Then　the　biodegradable　material　that　can　be　degraded　in　the　human　body　can　better　solve　this　problem　and　complete　it　in　the　human　body.　After　supporting　the　function,　it　will　degrade　into　harmless　substances.　In　the　past,　polylactic　acid-based　stents　had　poor　mechanical　properties　when　their　diameters　were　large.　Now,　this　problem　can　be　solved　by　manufacturing　the　stent　by　3D　printing　after　calculation　and　modeling.　This　article　mainly　introduces　the　application　of　biodegradable　materials　in　the　field　of　bio-stents　and　the　latest　research　progress　from　the　perspective　of　vascular　stents　and　urinary　system　stents.　©　2021,　The　Author(s),　under　exclusive　license　to　Springer　Nature　Singapore　Pte　Ltd.