This　paper　presents　a　novel　analytical　model　based　on　a　fictitious　saturated　soil　pile　(FSSP)　model,　Biot＇s　theory,　and　the　Novak　plane　strain　model　for　analyzing　the　horizontal　vibration　of　a　floating　pile　in　saturated　soil.　First,　the　horizontal　displacement　of　the　saturated　soil　and　horizontal　resistance　to　the　pile　were　determined　using　the　separation　variable　method　and　potential　functions.　Next,　the　horizontal　vibration　response　of　the　pile　was　obtained　by　deriving　differential　equations　specific　to　the　FSSP,　considering　its　complete　contact　with　the　solid　pile.　The　analytical　model　was　then　validated　by　reducing　the　proposed　solution　and　comparing　it　with　solutions　presented　in　the　literature.　Finally,　the　effects　of　various　soil　parameters,　such　as　the　FSSP　length,　damping　ratio,　elastic　modulus,　and　porosity,　on　the　horizontal　vibration　response　of　the　floating　pile　were　analyzed.