The　tailings　and　fluorine-containing　sludge　were　produced　during　the　physical　and　chemical　purification　of　natural　crystalline　graphite,　containing　heavy　metals　in　different　occurrence　forms.　To　evaluate　the　threat　of　different　heavy　metals　to　the　environment,　this　work　uses　the　modified　sequential　extraction　method　(BCR)　to　study　the　presence　of　heavy　metals　in　two　solid　wastes　and　their　dissolution　characteristics　in　different　environments.　The　results　show　that　the　pollution　risk　of　heavy　metals　in　graphite　tailings　to　the　environment　is　ranked　as　Mn　＞　Cr　＞　Ni　＞　Zn,　and　the　pollution　risk　of　Mn　in　fluorine-containing　sludge　is　higher　than　that　of　Cr.　This　is　because　the　Mn　in　the　two　solid　wastes　mainly　exists　in　the　form　of　weak　acid　extraction.　The　leaching　number　of　heavy　metals　in　the　two　solid　wastes　is　directly　proportional　to　the　soaking　time　and　soaking　temperature,　and　inversely　proportional　to　the　pH　value　and　the　solid-to-liquid　ratio.　The　number　of　heavy　metals　dissolved　in　solid　waste　landfills　is　significantly　higher　than　that　of　acid　rain　and　surface　water　environments.　Based　on　the　above　results　and　the　distribution　of　graphite　solid　waste,　solidification　agent　was　suggested　to　prevent　heavy　metal　dissolution　and　reduce　environmental　risks.