Given　the　necessity　to　monitor　the　dynamic　information　pertaining　to　the　human　spinal　column,　this　work　introduces　a　dynamic　three-dimensional　spinal　model　based　on　the　anatomical　structure　and　spatial　positioning　information　of　the　human　spine.　The　objective　of　this　model　is　to　analyze　the　kinematic　characteristics　of　the　human　spinal　column　during　flexion　and　extension　movements.　The　model　is　capable　of　utilizing　a　reduced　set　of　angular　variation　parameters　as　input　to　process　the　motion　trajectories　of　individual　vertebral　segments　of　the　spinal　column　during　flexion　and　extension　processes.　The　relevant　parameters　within　the　model　are　collected　through　the　VICON　system　and　compared　with　spatial　positioning　information　acquired　from　the　VICON　system.　The　results　indicate　that　the　model　can　effectively　capture　the　spatial　positional　changes　of　the　vertebrae　throughout　the　entire　flexion　process,　providing　an　effective　method　for　the　design　of　dynamic　spinal　motion　monitoring.　©　2024　IEEE.