Sea-Level　Rise　(SLR)　directly　changes　the　hydrology　and　salinity　of　estuarine　tidal　wetlands　and　is　one　of　the　primary　drivers　of　global　change　that　significantly　impacts　ecosystem　processes.　Herein,　various　methodologies　and　experimental　facilities　(marsh　organs,　weirs,　and　flow-through　mesocosms)　for　manipulating　SLR　are　systematically　reviewed.　This　study　provides　a　comprehensive　summary　of　the　effects　and　mechanisms　associated　with　SLR　regarding　the　fluxes　and　production　rates　of　CH4　and　CO2,　and　the　pathways　and　rates　of　soil　organic　carbon　mineralization　from　the　perspectives　of　SLR-saltwater　intrusion　and　inundation　increase.　Saltwater　intrusion　due　to　SLR　notably　decreases　CH4　production　rates　and　fluxes.　It　induces　a　shift　in　the　pathways　of　soil　organic　carbon　mineralization,　transitioning　from　CH4　production　to　microbial　SO2-4　reduction　in　tidal　freshwater　marshes.　The　main　mechanism　reducing　saltwater　intrusion-induced　CH4　flux　is　the　increased　presence　of　the　electron　acceptor　SO2-4,　which　hinders　soil　CH4　production.　The　impact　of　SLR　through　saltwater　intrusion　on　CO2　emissions　in　tidal　freshwater　marshes　exhibits　distinct　uncertainty.　Owing　to　the　inherent　challenges　in　experimentally　manipulating　SLR　in　situ,　few　reports　concerning　the　effects　of　SLR-related　inundation　on　CH4　and　CO2　fluxes　and　production　rates　exist.　However,　some　studies　have　suggested　that　an　increase　in　inundation　height　leads　to　a　reduction　in　CO2　emissions.　Additionally,　this　study　consolidates　information　surrounding　electron　acceptors　and　microbial　mechanisms　associated　with　SLR　that　influence　the　pathways　and　rates　of　soil　organic　carbon　mineralization　in　coastal　tidal　wetlands.　Finally,　this　study　outlines　the　specific　domains　that　warrant　further　exploration　in　future　research　on　the　impact　of　SLR　on　the　production　and　emission　of　carbon　greenhouse　gases　in　estuarine　tidal　marshes.　©　2024　Science　China　Press.　All　rights　reserved.