Abstrасt:　Taking　the　sintered　clay　brick　of　an　ancient　city　wall　of　Ming　Dynasty　in　Beijing　as　the　research　object,　the　mechanical　properties　of　blue　bricks　in　Beijing　in　Ming　Dynasty　were　tested　by　rebound　and　ultrasonic　methods,　and　the　uniaxial　compressive　strength　tests　were　also　carried　out.　On　this　basis,　linear　and　power　functions　were　respectively　used　to　fit　the　Rebound　Number　Ultrasonic　Pulse　Velocity　with　the　strength　test　results.　At　the　same　time,　one　strength　prediction　model　for　the　test　block　was　established　upon　the　ultrasonic-rebound　synthesis　method　(SonReb)　combined　with　linear　fitting,　nonlinear　fitting　and,　Response　Surface　Methodology.　And　the　accuracy　of　different　models　was　compared　and　analyzed.　The　results　show　that:　the　comprehensive　method　is　more　reliable　to　predict　the　uniaxial　compressive　strength　of　bricks　of　the　wall　in　Beijing　city,　and　its　prediction　accuracy　is　more　accurate　than　that　of　using　a　single　detection　method.　The　results　of　the　study　can　provide　the　basis　and　reference　for　obtaining　the　strength　index　of　ancient　blue　bricks　quickly　and　non-destructively.　©　2024　Tsinghua　University.　All　rights　reserved.