Current　studies　have　shown　that　local　feedstocks　such　as　coal,　natural　gas,　and　solar　resources　support　regional　industrial　decarbonization　pathways　but　fail　to　consider　inter-regional　cooperation.　We　employed　the　IPAC-technology　model　to　develop　a　sub-national　economic　technological　assessment　model　for　the　ammonia　industry,　incorporating　commodity　transportation　costs　to　directly　connect　ammonia　production　locations.　Our　analysis　indicates　that　carbon　price　is　crucial　for　achieving　zero　carbon　emissions　across　all　regions.　Xinjiang,　Inner　Mongolia,　and　Northwest　China　are　likely　to　become　electrolytic　hydrogen-based　ammonia　production　centers;　Beijing‒Tianjin‒Hebei　Region　and　Shandong　are　expected　to　develop　nuclear　hydrogen-based　ammonia　production;　Southern　China,　Henan,　and　Shanxi　are　set　to　become　hydrogen-based　ammonia　importer;　and　the　Yangtze　River　Delta　and　Southwest　China　appear　to　have　more　varied　development　opportunities.　Notably,　while　national　CO2　emissions　from　ammonia　sector　decrease　overall,　emissions　in　Xinjiang,　Inner　Mongolia,　and　the　Triangle　of　Central　China　are　projected　to　increase　in　the　near　term.　These　findings　provide　valuable　insights　for　policymakers　and　industry　practitioners　to　develop　decarbonization　strategies　and　reallocation　policies　for　China＇s　ammonia　industry.　©　2025　The　Authors