As　a　major　steel　producer,　the　annual　output　of　steel　in　China　has　reached　1.03　billion　tons,　ranking　the　highest　amount　over　the　world.　Blast　furnace　gas/converter　gas　is　the　by-products　of　the　blast　furnace　ironmaking　industry,　and　its　annual　output　is　as　high　as　~1.8　trillion　m3.　Therefore,　the　realizing　the　clean　and　efficient　utilization　of　blast　furnace　gas/converter　gas　is　a　major　demand　for　the　sustainable　development.　At　present,　the　integrated　utilization　of　blast　furnace　gas　and　converter　gas　by　iron　and　steel　companies　mainly　includes:　one　part　is　directly　used　as　fuel　for　boilers,　hot　blast　stoves,　heating　furnaces,　etc.;　The　other　part　is　to　use　the　residual　pressure　of　blast　furnace　gas　to　generate　electricity,　and　then　use　the　blast　furnace　gas　as　fuel　for　boilers,　hot　blast　furnaces,　and　heating　furnaces.　With　the　continuous　improvement　of　energy　structure　and　environmental　protection　requirements　in　China,　the　integrated　utilization　of　blast　furnace　gas/converter　gas,　purification　and　proportioning　according　to　the　raw　material　process　requirements　of　industrial　synthetic　ammonia　to　produce　green　hydrogen,　which　is　used　as　the　raw　feedstocks　for　synthetic　ammonia.　It　can　not　only　meet　the　demand　of　regional　economic　development　for　green　synthetic　ammonia　production,　but　also　realize　the　reorganization　of　blast　furnace　gas/converter　gas　resources.　As　a　result,　the　new　technique　promotes　the　green　development　of　the　regional　economy,　which　meets　the　current　national　requirements　for　energy　saving　and　emission　reduction　for　ammonia　synthesis　and　the　steel　industry.　Based　on　this,　this　review　systematically　analyzes　and　forecasts　the　low-carbon　and　high-efficiency　ammonia　synthesis　process　from　blast　furnace　gas/converter　gas　and　demonstrates　the　advantages　of　the　developed　technique.　Key　learning　points:　(1)　The　origin　and　development　trend　of　synthetic　ammonia　process　are　summarized.　(2)　The　development　status　of　ammonia　synthesis　process　with　blast　furnace　gas/converter　gas　is　summarized.　(3)　The　characteristics,　significance,　and　development　direction　of　the　ammonia　synthesis　process　with　blast　furnace　gas/converter　gas　are　summarized　and　proposed.　©　2023　Science　Press.　All　rights　reserved.