In　order　to　uncover　the　fractal　characteristics　of　adsorption-pores　of　sulfide　ores,　representative　samples　were　collected　from　Dongguashan　Copper　Mine　to　carry　out　the　low　temperature　nitrogen　adsorption　experiment.　The　QuadraSorb　Si　specific　surface　area　and　pore　size　distribution　analyzer　were　used　to　analyze　the　characteristics　of　different　pore　sizes　(0.250,　0.125　and　0.088　mm　in　diameter,　respectively).　FHH　(Frenkel-Halsey-Hill)　model　was　performed　to　calculate　their　fractal　dimensions;　the　relationship　between　gas　adsorptive　capacity　of　sulfide　ores　and　its　pore　structure　parameter　&　its　fractal　dimension　and　further　was　analyzed.　The　results　show　that　the　smaller　particle　size　of　sulfide　ores　is　associated　with　the　larger　microporous　specific　surface　area　and　pore　volume;　gas　adsorption　on　sulfide　ores　generally　occurs　in　the　micropores　varying　from　3　nm　to　4　nm　and　the　higher　the　fractal　dimension,　the　more　the　micropore.　The　specific　surface　area　becomes　larger　accordingly,　and　the　pore　surface　is　rougher　and　tends　to　three-dimensional　space.　The　value　of　fractal　dimension　indicates　the　adsorptive　capacity　of　samples,　and　the　fractal　dimension　is　positively　correlated　with　the　adsorptive　capacity.　Therefore,　the　high　fractal　dimension　and　the　complex　pore　structures　caused　by　the　decrease　of　smaller　particle　size　of　sulfide　ores　can　lead　to　the　great　possibility　of　oxidation　and　spontaneous　combustion.　©　2017,　Central　South　University　Press.　All　right　reserved.