Abstract: Alternate room-pillar mining method with ascending backfill is the main one mostly used in deep mining of Sanshandao Gold Mine.In mining practice of the metal mines，mines that adopted this method at domestic usually selected different structural parameters，and therefore，it is difficult to draw suitable parameters relying only on analogy or engineering experience.Aiming at those problems and combining with high stress and rock burst possibility in Sanshandao gold mine，the displacement and roof settlement of the middle section in one-step and two-step mining process under different structural parameters are obtained by numerical simulation.Combined with comprehensive efficiency，relative productivity，equipment matching degree and construction difficulties，the model of fuzzy comprehensive analysis is established.Through scientifically determining the membership function and establishing the weight of each factor by variation coefficient method，fuzzy criteria method and entropy method，five schemes listed are evaluated.Then，the optimal stope parameters for the practical mine are selected so as to ensure safety production and better economic profit as well.

Key words: Comprehensive analysis, Optimization of stope structure parameters, Membership degree, Weight vectors