This　paper　adopted　AHP　and　fuzzy　mathematics　to　estimate　an　ecological　evaluation　system　based　on　qualitative　analysis　from　specialists　in　the　fields　of　environmental　protection　and　iron　and　steel　industry,　which　consists　of　13　indicators,　weights　and　benchmarks.　At　the　end　of　paper　a　series　of　sample　data　was　put　into　the　model　in　order　to　prove　it　suitable　for　ecological　evaluation　in　terms　of　Chinese　iron　and　steel　industry.