The　innovation　ability　of　Graduate　student　is　one　of　the　important　factors　affecting　the　quality　of　higher　education　in　our　country.　At　first,　this　paper　puts　forward　evaluation　factors　of　Postgraduates＇　innovation　and　Evaluation　Index　System,　and　uses　the　fuzzy　analytic　hierarchy　process　(AHP)　to　determine　the　index　weight,　considering　the　evaluation　of　graduate　student　innovation　ability　has　the　characteristics　features　of　fuzziness　and　randomness,　summarizes　the　evaluation　process　of　graduate　students＇　innovation　ability　based　on　cloud　model,　to　enrich　and　perfect　the　evaluation　system　of　graduate　student　innovation　ability.　Conclusion　shows　that　the　cloud　model　for　graduate　student　innovation　ability　evaluation　and　fuzzy　analytic　hierarchy　process　(AHP)　can　be　well　objective　description,　has　good　comprehensive　and　scientific.