In　order　to　study　the　horizontal　bearing　characteristics　of　large-diameter　rock-socketed　rigid　pile　and　flexible　pile,　two　lateral　loading　tests　in　which　the　pile　lengths　are　5.2　m　and　11.07　m　were　carried　out.　Unidirectional　multi-cyclic　loading　was　applied　to　the　piles　during　the　tests,　with　the　maximum　load　reaching　3500　kN.　The　measured　results　are　compared　with　the　calculated　results　of　Zhang＇s　method,　m-method　and　the　rigid　pile　method　in　the　design　codes.　It　is　indicated　that　if　the　characteristic　values　of　the　horizontal　bearing　capacity　of　the　large-diameter　rock-socketed　rigid　pile　and　flexible　pile　are　determined　by　the　same　horizontal　displacement　of　the　pile　head,　some　risk　will　be　brought　to　the　design　of　the　rigid　pile.　Compared　with　the　rigid　pile　method,　the　m-method　is　more　suitable　for　calculating　the　rotation　angle　of　the　pile　head.　In　terms　of　the　maximum　bending　moment　of　the　large-diameter　rock-socketed　flexible　pile　under　the　critical　load,　the　calculated　result　of　Zhang＇s　method　is　less　than　the　measured　result,　while　the　calculated　result　of　the　m-method　is　the　largest.　However,　for　the　rigid　pile,　both　Zhang＇s　method　and　m-method　underestimate　the　maximum　bending　moment　of　the　pile　body.　In　summary,　when　a　large-diameter　rock-socketed　pile　is　designed,　reasonable　calculation　method　and　failure　discrimination　standard　should　be　chosen　according　to　the　actual　conditions.