The　calibration　of　the　discrete　element　model　of　EUO　samara　was　conducted　in　response　to　the　lack　of　discrete　element　simulation　models　and　parameters　in　the　development　of　mechanical　hulling　technology　and　equipment　of　EUO　samara.　The　EUO　samara　was　modeled　based　on　the　Hertz–Mindlin　with　bonding　model,　and　its　relevant　parameters　were　measured　by　physical　experiments.　Among　them,　maximum　shear　force　was　used　as　the　evaluation　index,　virtual　calibration　experiments　were　conducted　for　the　bonding　parameters　by　the　single-factor　experiments,　and　the　two-level　factorial　experiment,　the　steepest　climb　experiment,　and　the　Box–Behnken　response　surface　experiment　were　also　used.　The　results　showed　that　the　relative　error　between　the　simulated　and　measured　maximum　shear　force　is　0.93%;　the　model　and　parameter　calibration　results　established　by　this　research　can　be　used　for　discrete　element　simulation　research,　which　is　of　guiding　significance　for　the　research　and　development　of　hulling　equipment　of　EUO　samara.　©　2023　by　the　authors.