The　nodal-based　continuous-discontinuous　deformation　analysis　method　(NCDDAM)　proposed　by　the　authors　has　demonstrated　its　potential　for　dynamic　analysis　of　rock　masses　with　discontinuities.　However,　the　existing　boundary　conditions　applied　in　NCDDAM　are　not　suitable　for　seismic　dynamic　analysis,　as　they　can　cause　fictitious　reflected　waves.　To　further　apply　the　NCDDAM　for　seismic　dynamic　analysis,　this　paper　introduces　five　boundary　conditions:　viscous　boundary,　viscoelasticity　boundary,　seismic　input　boundary,　free　field　boundary,　and　staticdynamic　unified　boundary.　Several　numerical　examples　are　conduced　to　validate　the　enriched　NCDDAM.　The　numerical　results　demonstrate　the　capacity　of　the　enriched　NCDDAM　for　seismic　dynamic　analysis　of　rock　masses.　The　nonreflecting　boundaries　applied　in　NCDDAM　can　effectively　absorb　wave　energy　and　avoid　fictitious　scattered　waves,　while　the　free　field　boundary　applied　in　NCDDAM　effectively　simulates　wave　propagation　in　a　semi-infinite　domain.　Based　on　the　static-dynamic　unified　boundary,　the　seamless　transition　of　boundary　condition　settings　between　the　quasi-static　and　dynamic　stages　can　be　achieved.　The　entire　evolution　process　of　earthquake-induced　disasters,　including　initiation,　movement,　run-out,　and　deposition　can　be　effectively　simulated　within　a　unified　framework　using　the　enriched　NCDDAM.