Sliding　friction　bearings　are　effective　passive　devices　to　mitigate　the　seismic　responses　of　structures.　Extensive　researches　have　been　conducted　on　sliding　bearings.　However,　most　previous　studies　were　based　on　the　assumption　that　the　effects　of　frictional　heating　are　negligible.　A　three-dimensional　thermal-mechanical-coupled　finite　element　(FE)　model　of　the　friction　pendulum　system　(FPS)　was　developed　in　this　study.　Good　agreements　between　the　numerical　results　and　the　data　measured　in　the　previous　tests,　in　terms　of　the　force-displacement　curves　and　temperature　time-histories,　indicate　that　the　proposed　FE　model　can　predict　the　response　of　the　FPS.　Based　on　the　developed　FE　model,　the　surface　temperature　distribution,　the　effective　stiffness　and　the　energy　dissipation　of　the　double　concave　friction　pendulum　and　multiple　friction　pendulum　bearings　were　investigated　and　compared.　In　addition,　the　thermal　states　of　the　sliding　bearings　in　the　bridge　during　earthquake　were　evaluated.　The　numerical　results　indicate　that　the　temperature　rise　in　the　sliding　bearings　leads　to　the　degradation　of　the　effective　stiffness　and　less　energy　dissipation.　The　relative　displacements　of　the　bearings　increase　considering　the　frictional　heating　effects　in　the　bearings.　If　the　frictional　heating　of　the　bearings　is　ignored,　the　peak　bearing　displacements　will　be　underestimated.