The　stresses　on　the　wall　and　sliding　plane　of　the　sliding　backfill　mass　at　arbitrary　depths　were　obtained　according　to　the　soil　arching　effect.　A　formula　of　the　seismic　active　failure　angle　behind　the　non-vertical　rigid　retaining　wall　under　translation　mode　was　obtained　on　the　basis　of　the　pseudo-static　method　and　the　equilibrium　total　forces.　A　formula　of　the　seismic　active　earth　pressure　against　the　non-vertical　rigid　retaining　wall　under　translation　mode　was　derived　according　to　the　method　of　differential　level　layer.　The　seismic　active　earth　force　and　the　action　point　were　obtained.　The　distribution　of　seismic　active　earth　pressure　from　the　proposed　formula　was　non-linear　along　the　height　of　wall.　In　addition,　the　influences　of　the　wall-back　inclination,　internal　friction　angle　of　backfill,　wall-soil　friction　angle,　seismic　coefficient　and　load　against　the　backfill　surface　on　the　seismic　failure　angle,　seismic　active　earth　pressure　and　its　coefficient,　seismic　active　earth　force　and　height　of　its　application　were　investigated.　©,　2015,　Academia　Sinica.　All　right　reserved.