In　this　paper,　the　shaking　table　tests　and　finite　element　analyses　were　conducted　on　the　traditional　thermal　power　plant　main　building　and　the　thermal　power　plant　main　building　with　BRBs,　respectively.　The　differences　in　torsional　resistance　between　the　two　structural　systems　were　studied,　and　the　suppression　effect　on　the　displacement　field　distortion　of　the　plane　consisting　of　crane　and　tracks　through　adding　BRBs　in　the　thermal　power　plant　main　building　was　discussed.　The　study　shows　that　after　adopting　a　buckling-restrained　brace　in　a　thermal　power　plant　main　building,　the　damage　and　torsional　response　of　the　structure　under　an　earthquake　can　be　reduced,　the　occurrence　of　inelastic　torsion　can　be　effectively　blocked,　and　the　translation-torsion　coupling　effect　can　be　reduced.　At　the　same　time,　it　can　reduce　the　distortion　amplitude　of　the　displacement　field　of　the　plane　consisting　of　crane　and　tracks　and　play　a　key　role　in　improving　the　reliability　of　roof　truss,　crane,　coal　bucket,　and　low-ductility　connectors,　and　it　also　facilitates　the　realization　of　performance-based　seismic　design.