Analyzing　the　magnetization　reversal　process　is　crucial　for　enhancing　the　magnetic　properties　of　nanocomposite　magnets,　thereby　subsequently　increasing　the　magnetic　energy　product　and　advancing　the　development　of　next-generation　rare　earth　permanent　magnet　materials.　Here,　the　open　recoil　loop　is　systematically　investigated　based　on　micromagnetic　simulations　and　comparing　magnetization　configurations,　which　is　strongly　associated　with　the　asymmetric　behavior　of　weak　pinning　at　the　soft/hard　magnetic　interface.　By　removing　and　reapplying　field,　the　irreversible　weak　pinning　sites　exhibit　asymmetric　behavior,　leading　to　the　formation　of　open　phenomena　in　nanocomposites. The　open　degree　of　recoil　loops　obtained　from　experimental　testing　was　also　correlated　with　the　irreversible　magnetization,　which　supports　the　simulation　results.　Our　findings　provide　a　novel　approach　for　understanding　the　magnetization　reversal　mechanism　in　nanocomposite　magnets.　©　The　Author(s),　under　exclusive　licence　to　Springer　Science+Business　Media,　LLC,　part　of　Springer　Nature　2024.