To　better　protect　ancient　wooden　structures,　this　paper　presents　a　dual-indicator　prediction　model　that　is　applicable　to　assessment　on　the　safety　of　wooden　structures　with　consideration　of　bioerosion.　More　specifically,　the　dual　indicator　includes　bearing　capacity　index　and　deformation　capacity　index.　The　former　is　achieved　by　combining　the　Gerhards　model　and　the　time-varying　bioerosion　model.　The　latter　is　implemented　by　employing　the　Weibull　model　to　fit　the　development　tendency　of　monitoring　data.　This　dual-indicator　prediction　model　was　finally　applied　to　an　existing　ancient　wooden　structure,　i.e.　the　Seven　Literary　World,　to　predict　the　remaining　service　life　(RSL).　For　the　Seven　Literary　World,　the　RSL　of　the　most　components　predicted　by　the　deformation　capacity　index　is　much　shorter　than　that　predicted　by　the　bearing　capacity　index.　Taking　the　shortest　RSL　of　all　components　as　the　RSL　of　the　overall　structure,　the　RSL　of　the　Seven　Literary　World　is　96.6　years.　Besides,　for　bearing-capacity-based　RSL　prediction,　the　RSL　without　considering　bioerosion　reaches　to　7803　years,　which　is　much　larger　than　that　considering　bioerosion,　i.e.　287　years.　The　results　show　that　the　proposed　dual-indicator　prediction　model　can　comprehensively　predict　the　future　service　state　of　structures,　and　it　will　much　overestimate　RSL　of　wooden　structures　if　bioerosion　is　neglected.