There　are　a　large　number　of　fahlores　recognized　in　the　Zijinshan　ore　field,　including　tetrahedrite,　tennantite,　Zn-rich　tetrahedrite,　goldfieldite,　Bi-rich　tetrahedrite,　etc.　The　changes　in　their　mineral　composition　have　significance　for　the　evolution　of　the　ore-forming　environment.　This　article　presents　a　detailed　study　of　the　fahlores　using　electron　probe　analysis.　The　results　indicate　that　in　the　Zijinshan　Au-Cu　deposit,　fahlores　are　Te-rich　in　shallow　zones　and　Zn-rich　in　deep　zones.　The　Zijinshan　Xi＇nan　deposit　is　generally　Zn-rich,　with　a　Bi-rich　in　middle　levels.　The　Longjiangting　deposit　is　Sb-　and　Zn-rich　in　shallow　zones　and　As-　and　Bi-rich　in　deep　zones,　whereas　the　Yueyang　deposit　is　Sb-　and　Zn-rich　in　shallow　zones　and　Bi-rich　in　deep　zones.　The　fahlores　in　the　Zijinshan　ore　field　often　show　zoning　in　backscattered　images　due　to　As　and　Sb　variations.　From　the　porphyry　to　high-sulfidation　stages,　fahlores　evolve　from　Fe-rich　to　Zn-,　Bi-,　and　Sb-rich,　and　finally　to　Te-rich.　From　the　porphyry　to　low-sulfidation　stages,　fahlores　transition　from　Bi-rich　to　Zn-rich　and　eventually　to　Ag-rich　compositions.　The　discovered　mineral　assemblages　of　the　fahlores　are　of　great　significance　for　understanding　the　framework　of　complex　porphyry　shallow　hydrothermal　environments　and　prospecting　for　underlying　porphyry　ore　bodies　in　the　Zijinshan　ore　field.