Two-dimensional　Ti3C2Tx　(MXene)　nanosheets　with　excellent　electrical　conductivity,　a　vast　range　of　functional　groups,　and　abundant　surface　defects　reveal　tremendous　potential　for　electromagnetic　wave　(EMW)　absorption.　Nonetheless,　the　excessive　conductivity　of　pure　MXene　may　result　in　mismatches　of　electromagnetic　parameters　and　an　inability　to　meet　impedance　matching　requirements.　Here,　a　facile　self-assembly　strategy　was　used　to　assemble　MXene　with　ZnFe2O4　(ZFO)　through　polydopamine　(PDA)　to　form　ZFO@PDA@MXene　(ZFPM)　core/　shell/　shell　composites,　which　solved　this　problem.　By　strong　hydrogen　bonding,　MXene　was　successfully　affixed　to　the　interface　of　ZFO@PDA,　forming　a　core/shell/shell　structure,　in　which　ZFO　is　the　core,　and　PDA　and　MXene　are　the　shells.　Furthermore,　the　influence　of　MXene　content　on　the　EMW　absorption　performance　for　ZFPM　composites　was　also　investigated.　Remarkably,　the　ZFPM　composites　containing　20　wt.　%　MXene　exhibit　strong　EMW　absorption,　achieving　an　optimum　reflection　loss　of　−53.0　dB　(99.9995　%　absorption　of　EMWs)　at　a　matched　thickness　of　only　1.5　mm.　The　excellent　EMW　absorption　performance　is　mainly　attributed　to　the　synergistic　effect　related　to　the　core/shell/shell　structure　of　the　ZFPM　composites　and　the　magnetic　dielectric　loss.　These　results　demonstrate　that　ZFPM　composites　are　attractive　candidates　for　EMW　absorption　applications　and　offer　new　ideas　for　the　design　of　magnetic　MXene-based　absorbers.　©　2023　Elsevier　B.V.