In　response　to　the　difficulties　in　accurately　reproducing　the　resistance　drop　generated　by　puncturing　key　tissue　layers　with　a　needle　and　the　poor　experience　in　existing　simulators,　based　on　the　continuous　controllability　and　rapid　response　of　magnetorheological　fluid　under　the　influence　of　a　magnetic　field,　this　paper　proposes　a　lumbar　puncture　training　simulator(LPTS)　that　can　accurately　simulate　the　puncture　feedback　force　within　tissues　such　as　the　skin,　subcutaneous　fat,　and　supraspinous　ligament　throughout　the　entire　process.　By　using　a　dual　rod　structure　and　reasonably　arranging　the　damping　channel　gap,　the　influence　of　mechanical　friction　and　zero-field　damping　force　on　the　feedback　force　during　tissue　progression　is　minimized.　This　paper　introduces　the　acquisition　and　modeling　analysis　of　raw　data,　and　based　on　this,　the　design,　simulation,　and　mechanical　testing　of　the　simulator　are　carried　out.　Finally,　a　performance　testing　platform　for　the　simulator　is　established　to　evaluate　its　tracking　performance　of　the　expected　puncture　strength　and　the　reproducibility　of　the　puncture　sensation.　The　results　show　that　the　experimental　puncture　strength　deviates　from　the　expected　puncture　strength　by　0.35　N　to　0.61　N　in　the　crucial　steps　of　breaking　through　the　supraspinous　ligament,　interspinous　ligament,　ligamentum　flavum,　and　dura　mater,　with　a　relative　error　below　10　%.　©　2024