ZIF-8　is　widely　applied　in　lubrication,　adsorption,　and　catalysis　owing　to　its　unique　physicochemical　properties.　Previous　experimental　studies　have　demonstrated　its　feasibility　as　a　lubricant　additive.　In　the　present　work,　the　lubricating　performance　of　ZIF-8　as　an　additive　to　lithium-based　grease　is　quantitatively　and　dynamically　analyzed　at　the　atomic　scale　using　molecular　dynamics　simulations.　Friction　wear　experiments　are　also　conducted　to　elucidate　the　lubrication　mechanism　of　ZIF-8.　The　simulation　and　experimental　results　indicate　that　the　incorporation　of　ZIF-8　effectively　enhances　the　antifriction　and　antiwear　characteristics　of　lithium　grease.　The　most　significant　improvement　in　the　lubrication　performance　of　the　grease　is　obtained　at　a　mass　fraction　of　2.0　wt.　%　ZIF-8,　which　reduces　the　friction　factor　mu　of　the　grease　by　about　17.0%　and　the　wear　by　similar　to　40.0%.　Furthermore,　the　molecular　dynamics　simulations　reveal　that　ZIF-8　primarily　functions　as　a　ball　bearing　under　low-load　conditions.　However,　under　high-load　conditions,　ZIF-8　undergoes　significant　deformation　and　primarily　acts　as　a　filler.　This　explains　the　experimentally　observed　significant　reduction　in　friction　coefficient　after　the　addition　of　ZIF-8.　The　results　of　this　study　provide　a　theoretical　foundation　for　the　development　of　new　environmentally　friendly　grease　additives.