Nanoscale　zero-valent　iron　(NZVI),　which　has　the　advantages　of　small　particle　size,　large　specific　surface　area,　and　high　reactivity,　is　often　injected　into　contaminated　aquifers　in　the　form　of　slurry.　However,　the　prone　to　passivation　and　agglomeration　as　well　as　poor　stability　and　mobility　of　NZVI　limit　the　further　application　of　this　technology　in　fields.　Therefore,　sulfided　NZVI　loaded　on　reduced　graphene　oxide　(S-NZVI/rGO)　and　guar　gum　(GG)　with　shearthinning　properties　as　stabilizers　were　used　to　synthesize　S-NZVI/rGO@GG　slurries.　SEM,　TEM,　and　FT-IR　confirmed　that　the　dispersion　and　anti-passivation　of　NZVI　were　optimized　in　the　coupled　system.　The　stability　and　mobility　of　the　slurry　were　improved　by　increasing　the　GG　concentration,　enhancing　the　pH,　and　decreasing　the　ionic　strength　and　the　presence　of　Ca2　+　ions,　respectively.　A　modified　advection-dispersion　equation　(ADE)　was　used　to　simulate　the　transport　experiments　considering　the　strain　and　physicochemical　deposition/release.　Meanwhile,　colloidal　filtration　theory　(CFT)　demonstrated　that　Brownian　motion　plays　a　dominant　role　in　the　migration　of　S-NZVI/rGO@GG　slurry,　and　the　maximum　migration　distance　can　be　increased　by　appropriately　increasing　the　injection　rate.　ExtendedDerjaguin-Landau-Verwey-Overbeek　(XDLVO)　theory　showed　that　the　excellent　stability　and　migration　of　S-NZVI/rGO@GG　slurry　mainly　came　from　the　GG　spatial　forces.　This　study　has　important　implications　for　the　field　injection　of　S-NZVI/rGO@GG　slurry.　According　to　the　injection　parameters,　the　injection　range　of　S-NZVI/rGO@GG　slurry　is　effectively　controlled,　which　lays　the　foundation　for　the　promotion　of　application　in　actual　fields.　(c)　2024　The　Research　Center　for　Eco-Environmental　Sciences,　Chinese　Academy　of　Sciences.　Published　by　Elsevier　B.V.