The　fire　in　the　cable　shaft　has　the　characteristics　of　fast　spread,　great　fire　hazard,　and　high　difficulty　in　extinguishing.　And　the　fireproof　sealing　measures　are　often　used　in　the　cable　shaft　to　slow　down　or　even　block　the　spread　of　the　fire,　but　few　scholars　have　evaluated　the　overall　performance　of　the　fireproof　sealing　system.　Therefore,　based　on　the　entropy　method,　this　paper　proposes　a　performance　evaluation　system　for　the　fireproof　sealing　system　of　cable　shafts　in　high-rise　buildings.　Firstly,　based　on　the　composition　of　the　fireproof　sealing　system　of　the　cable　shaft　in　high-rise　buildings,　a　performance　evaluation　system　is　constructed.　Secondly,　the　entropy　method　is　used　to　calculate　the　entropy　weight　of　each　index　of　the　evaluation　system.　Finally,　the　performance　evaluation　scores　and　rankings　of　the　fireproof　sealing　system　of　cable　shafts　in　high-rise　buildings　based　on　the　entropy　method　are　obtained.　The　result　shows　that　the　performance　evaluation　results　of　the　fireproof　sealing　system　calculated　by　the　system　are　consistent　with　the　field　experimental　results,　which　verifies　the　effectiveness　of　the　evaluation　system.　©　2023　IEEE.