Abstract: Comprehensive evaluation was done on metallic ore river water quality combine with analytic hierarchy process method and fuzzy mathematics,fuzzy comprehensive evaluation index system of  river water quality was set up,weight of each layer evaluation index was confirmed.Fuzzy relation synthetical matrix was got through the treatment of multi-group monitoring data of Yantai Mouping area Huanglei river,comprehensive evaluation was done on water quality of Huangleihe.Result of fuzzy comprehensive evaluation is accord with practice,and this method is applied effectively.

Key words: River water quality, Fuzzy comprehensive evaluation, Analytic hierarchy process method, Environment monitor