With　the　expansion　of　the　application　field　of　robots,　the　use　of　eight-legged　bionic　robots　to　assist　or　replace　human　operations　in　various　complex　and　extreme　terrains　is　constantly　being　explored.　This　paper　uses　octopus　as　a　bionic　object,　designs　an　eight-eccentric　wheel　walking　platform,　and　studies　its　dynamics,　kinematics　and　trajectory　planning.　This　paper　first　investigates　the　development　history　and　research　status　of　multi-legged　robots　in　many　countries,　analyzes　the　shortcomings　of　octalegged　robots,　and　proposes　improved　solutions　on　this　basis.　Through　the　bionic　of　the　octopus　structure,　the　Catia　software　is　used　to　design　and　establish　a　three-dimensional　model　of　the　octopus-like　eight-eccentric　wheel　robot.　By　importing　the　three　dimensional　model　into　the　dynamic　analysis　software　Adams　for　simulation,　after　adding　constraints,　driving,　torque　and　contact　force,　the　various　functions　of　the　platform　are　simulated　to　obtain　linear　wheel　walking,　rotary　motion,　linear　leg　walking,　the　parameters　of　jumping　motion　and　obstacle-crossing　motion　are　drawn　into　tables　for　intuitive　analysis,　and　virtual　prototype　simulation　is　used　to　verify　the　correctness　of　the　established　model　and　trajectory　planning.　The　research　in　this　paper　lays　a　theoretical　foundation　for　the　development　and　application　of　this　eight-eccentric　wheel　bionic　robot.　©　2021　Institute　of　Physics　Publishing.　All　rights　reserved.