Rapidly　and　correctly　assessing　the　extent　of　the　damage　to　a　concrete　structure　after　a　disastrous　fire　has　great　engineering　significance.　In　this　paper,　an　assessment　method　is　proposed　based　on　the　game　theory-normal　cloud　model.　The　surface　colors　of　concrete,　exfoliation,　cracks,　and　hammering　responses　are　chosen　as　the　comprehensive　assessment　indices　of　concrete　damage　after　fire　to　establish　the　corresponding　assessment　criteria.　The　normal　cloud　generator　is　used　to　calculate　the　certainty　degree　of　the　grading　assessment　index　of　concrete　damage　after　fire.　By　adopting　game　theory,　the　objective　weight　obtained　by　the　information　entropy　method　and　the　subjective　weight　obtained　by　precedence　chart　are　combined　into　a　comprehensive　weight.　The　comprehensive　certainty　degree　value　of　concrete　damage　after　fire　is　then　calculated　by　certainty　and　weight　matrices.　The　project　case　analysis　shows　the　assessment　results　are　both　intuitive　and　realistic.　This　method　provides　a　new　approach　to　the　assessment　of　concrete　damage　after　fire　which　is　more　efficient　and　easier　to　apply　than　existing　methods.