The　interfacial　stresses　of　FRP-　RC　hybrid　beams　were　studied　by　analytical　methods.　An　approximate　model　of　the　hybrid　beam　was　developed　and　a　closed-form　solution　for　interfacial　shear　stress　was　derived　out.　Then　the　finite　element　calculations　were　carried　out　for　validation　of　the　analytical　solution.　The　comparisons　between　present　solution　and　other　ones　in　existing　literatures　were　also　performed.　It　is　shown　that　the　analytical　solution　for　the　interfacial　shear　stress　is　agreed　well　with　the　corresponding　finite　element　result.