To　the　case　that　spontaneous　combustion　of　sulfide　ores　with　preference　information,　in　order　to　establish　analysis　system　of　ores　spontaneous　combustion,　the　influential　factors　of　ores　spontaneous　combustion　were　comprehensively　considered.　Dominance　relation-based　rough　set　theory　was　applied　to　reduce　condition　attributes　of　ores　spontaneous　combustion　and　generate　minimum　sets　of　preference　rules.　Rules　of　ores　spontaneous　combustion　were　analyzed.　The　results　show　that　ores　spontaneous　combustion　system　with　preference　information　can　be　fully　analyzed　by　this　method,　which　will　be　more　objective　and　simple,　as　well　as　more　reliable.　Compared　with　the　traditional　evaluation　methodology　used　for　ores　spontaneous　combustion　system,　this　method　is　more　reasonable　and　scientific.