Abstract: In order to guarantee objectivity of evaluation results, comprehensive evaluation system of mining scheme should be established.The relationship matrix and fuzzy theory in optimizing mining method were used.It can use the relations matrix to determine each factor activity index.It is by means of the membership in fuzzy theory as the quantification method to reflect the single factor grading index of mining characteristics.Then it needs to ensure the factor's membership value of each mining scheme.Above all, the comprehensive index of each mining scheme was calculated.Taken a pyrite mine as an example, the superior degree coefficient of each mining scheme are 0.746, 0.686, 0.713 by calculating.Then the scheme 1 is selected and it conforms to the actual situation of mine.

Key words: Relationship matrix, Fuzzy theory, Mining scheme, Comprehensive superior coefficient