Waveguide　coupling　design　is　one　of　the　most　challenging　topics　in　augmented　reality　(AR)　near-eye　displays　(NED).　The　primary　challenge　stems　from　the　necessity　to　simultaneously　address　two　competing　factors:　the　overall　volume　of　the　AR　system　and　the　occurrence　of　chromatic　aberration.　To　address　this　issue,　what　we　believe　to　be　a　novel　tandem　trilayer　achromatic　metasurface　is　specifically　designed　for　waveguide　coupling　in　AR　NEDs,　capable　of　achieving　an　achromatic　effect　in　a　nanometer-thin　layer.　By　analyzing　the　influence　of　unit　structure　parameters　on　the　phase　delay　of　input　electromagnetic　waves,　the　optimal　parameters　are　determined　and　the　tandem　trilayer　achromatic　metasurface　structure　is　established.　Simulation　results　show　that　the　incident　light　can　be　deflected　by　45°,　46°,　and　45°　at　wavelengths　of　440　nm　∼　470　nm,　520　nm　∼　550　nm,　and　620　nm　∼　660　nm,　respectively.　The　angular　deviation　error　of　the　three　primary　colors　is　maintained　lower　than　1°　in　the　AR　waveguide,　ensuring　a　satisfactory　achromatic　effect.　This　design　provides　a　new　solution　for　developing　ultra-thin　and　compact　optical　systems　for　full-color　AR　NEDs.　©　2025　Optica　Publishing　Group　under　the　terms　of　the　Optica　Open　Access　Publishing　Agreement.