High　gradient　magnetic　separation　technology　is　the　key　technology　for　green　and　efficient　separation　and　purification　of　mineral　resources.　Existing　studies　are　vague　about　the　division　of　the　attraction　and　repulsion　zones　of　the　medium,　and　there　are　fewer　explorations　of　the　effect　of　various　conditions　on　the　attraction　zones.　In　this　work,　a　novel　method　for　calculating　the　magnetic　force　is　derived,　which　provides　an　accurate　calculation　of　the　3D　magnetic　force.　The　attraction　and　repulsion　zones　are　divided　clearly　by　analyzing　the　relationship　between　the　spatial　angle　of　the　spherical　medium　and　the　magnetic　force　density　per　unit　volume,　with　the　magnetic　force　density　per　unit　volume　tangent　to　the　spherical　surface　as　the　dividing　line.　The　attraction　and　repulsion　zones　are　divided　by　beta　=　30　degrees　similar　to　35　degrees,　and　the　attraction　region　accounts　for　45%similar　to　50%　of　the　total　space　volume.　Furthermore,　the　influence　of　different　conditions　on　the　attraction　zone　is　studied.　It　was　found　that　the　zone　of　attraction　decreases　as　one　moves　away　from　the　spherical　medium,　which　results　in　an　ellipsoid　with　the　effective　zone　of　attraction　of　the　spherical　medium　having　the　magnetic　field　direction　as　its　long　axis.　The　attraction　region　increases　from　45.49%　to　49.87%　of　the　space　occupied　with　increasing　the　relative　permeability　of　the　spherical　medium.　It　does　not　affect　the　proportion　of　the　attraction　zone　in　space　by　changing　the　background　magnetic　field　and　the　size　of　the　spherical　medium,　but　it　will　change　the　depth　of　the　magnetic　force.　It　provides　a　theoretical　basis　for　the　design　of　high-efficiency　magnetic　media,　and　gives　a　reference　for　further　improving　the　selection　effect　of　high　gradient　magnetic　separation　technology　on　fine　and　weak　magnetic　particles.