Reasonable　determination　of　the　stability　of　the　tunnel　face　under　complex　conditions　is　necessary　for　safe　construction.　This　paper　focuses　on　the　seismic　stability　of　the　tunnel　face　in　cohesion-frictional　soils　based　on　the　non-associated　flow　rule.　The　pseudo-static　approach　is　adopted　to　reflect　the　seismic　effect.　An　analytical　model　is　proposed　based　on　the　limit　analysis　method.　A　series　of　numerical　simulations　are　performed　to　verify　the　rationality　of　the　theoretical　model.　Then,　parametric　analyses　are　carried　out.　Results　show　that　the　proposed　model　is　reasonable　to　investigate　the　tunnel　face　stability　under　the　seismic　load.　The　study　indicates　that　it　is　essential　to　consider　not　only　the　seismic　load　but　also　the　non-associated　flow　rule　when　determining　the　limit　support　pressure　of　tunnel　face,　especially　in　the　soils　with　high　friction　angle　or　unit　weight.