The　lotus　petiole　in　nature　is　characterized　by　its　porous　structure　and　high　bending　resistance.　Inspired　by　this,　in　this　paper,　random　sampling　of　lotus　petiole　was　carried　out　to　clarify　the　porous　distribution　pattern　of　lotus　petiole　in　cross　section.　On　this　basis,　the　original　structures　with　12　and　13　wells　(Os-12w,　Os-13w)　were　constructed,　and　equal　mass　hollow　circular　tube　(Emhct)　was　also　designed　for　comparison.　Based　on　the　experimentally　verified　finite　element　models,　Os-12w,　Os-13w　and　Emhct　were　comparatively　analyzed.　In　addition,　comparisons　were　made　with　five　other　bionic　circular　structures　Compared　to　the　rest　of　the　structures,　Os-13w　performs　better　in　all　comprehensive　properties.　The　bending　and　traction　in　the　core　region　of　the　bionic　structure　caused　the　surrounding　structures　to　join　in　the　buckling　earlier,　creating　a　global　crushing　trend.　More　interestingly,　further　bending　and　traction　in　the　core　region　creates　a　negative　Poisson＇s　ratio　phenomenon.　In　addition,　the　results　of　the　parametric　study　show　that　the　optimum　loading　angle　of　Os-12w　is　between　60　degrees　and　90　degrees,　and　the　proper　adjustment　of　its　core　cross-section　characteristics　can　improve　the　mechanical　properties　of　the　structure.　This　study　provides　some　reference　for　the　development　of　thin-walled　porous　structures　under　radial　loading　conditions.