In　order　to　explore　the　release　law　and　characteristics　of　heavy　metals　in　natural　coal　gangue　under　the　rainwater　soaking　and　leaching,　scanning　electron　microscope　(SEM)　was　used　to　observe　the　microscopic　morphology　of　natural　coal　gangue　and　X-ray　diffraction　(XRD)　was　used　to　determine　the　mineral　composition　and　changes　before　and　after　leaching.　The　release　law　and　characteristics　of　heavy　metals　in　coal　gangue　were　investigated　by　continuous　static　soaking　and　dynamic　leaching　tests　with　simulated　precipitation　under　different　solid-liquid　ratio,　particle　size,　pH　and　soil　medium　conditions.　The　results　show　that:　(1)　SEM　and　XRD　analysis　results　reveal　that　the　surface　of　natural　coal　gangue　has　a　layered　structure　with　high　smoothness,　and　after　leaching,　the　surface　of　coal　gangue　presents　more　concave-convex　structures.　There　is　small　change　in　the　content　of　each　mineral　phase,　therefore　the　coal　gangue　has　high　stability　during　natural　rainfall　leaching　process.　(2)　The　simulated　continuous　static　soaking　test　shows　that　the　leaching　content　of　As　and　Mn　is　higher,　and　the　release　rates　are　ranked　as　As＞Cd＞Cu≈Ni＞Mn＞Cr＞Zn＞Pb.　Among　them,　the　cumulative　release　of　As　poses　a　higher　risk　of　adverse　effects　on　the　surrounding　soil　environment　and　groundwater,　and　the　leaching　of　Cu　has　two　stages:　rapid　release　and　stable　release.　Zn,　Pb,　and　Cd　belong　to　the　late-stage　release　elements;　Cr　and　As　belong　to　indirect　release　elements;　Mn　belongs　to　fast　release　elements;　and　Ni　belongs　to　slow　release　elements.　(3)　The　continuous　dynamic　leaching　test　shows　that　the　cumulative　release　of　Mn,　Cu,　Zn　and　Ni　is　significantly　higher　at　pH　3.0,　and　the　cumulative　release　of　As　and　Cr　under　neutral　conditions　is　higher　than　that　under　acidic　conditions.　After　the　introduction　of　the　soil　medium,　the　cumulative　release　of　Cr　and　As　decreased　significantly,　indicating　that　both　heavy　metals　are　adsorbed　the　soil.　The　research　shows　that　for　the　same　stack　of　coal　gangue,　the　release　of　heavy　metals　is　higher　with　high　rainfall.　The　maximum　release　of　As　can　reach　2.822　μg/L　at　a　solid-liquid　ratio　of　1∶20.　Because　Cr　and　As　are　accumulated　in　the　soil,　after　leaching　of　the　coal　gangue,　Cr　and　As　pose　potential　risk　of　polluting　the　soil,　and　the　impact　on　surrounding　groundwater　should　also　be　considered.　©　2023　Editorial　Board,　Research　of　Environmental　Sciences.　All　rights　reserved.