The　aluminum/steel　dissimilar　structure　is　a　cornerstone　for　lightweight　components　and　equipment.　Yet,　traditional　fusion　welding　methods＇　high　heat　input　frequently　gives　rise　to　detrimental　defects　such　as　porosity,　cracks,　and　excessively　thick　intermetallic　compound　layers　(IMCLs)　at　the　interface.　To　overcome　these　challenges,　this　paper　innovatively　combines　low　heat　input　solid-state　friction　rolling　additive　manufacturing　(FRAM)　and　strategic　interface　design　to　achieve　reliable　bonding　between　these　dissimilar　metals.　Our　investigation　found　that　conventional　FRAM　(C-FRAM),　hindered　by　inadequate　heat　input,　struggled　to　facilitate　continuous　atomic　migration,　leading　to　incomplete　joint　formation.　However,　the　introduction　of　arc-assisted　FRAM　(Aa-FRAM)　significantly　increased　aluminum/steel　mixing,　fostering　interdiffusion　of　interface　atoms　under　high　temperature　and　pressure　conditions.　This　resulted　in　the　formation　of　uniform　2.3　mu　m　IMCLs　composed　of　Fe7Al11,　Fe4Al13,　and　FeAl6,　and　the　nanoscale　amorphous　layer　was　found　between　IMCLs　and　steel.　The　metallurgical　bonding　was　successfully　established　at　the　Aa-FRAM　interface.　Moreover,　by　using　arc/　micro-hole　assisted　FRAM　(AHa-FRAM),　which　machined　an　array　of　micro-holes　on　the　steel　surface,　we　further　optimized　the　aluminum-steel　interface　bonding　quality.　The　plasticized　aluminum　alloy　(Al　alloy)　seamlessly　flowed　into　these　micro-holes,　creating　a　robust　＂self-riveting＂　structure　that　bolstered　mechanical　interlocking　at　the　interface.　Consequently,　we　achieved　a　high-strength　joint　with　an　exceptional　ultimate　tensile　strength　(UTS)　of　167.2　MPa.　In　addition,　the　crystallographic　analysis　showed　that　the　grain　size　was　significantly　refined　by　using　the　two　auxiliary　methods,　which　played　a　fine　grain　strengthening　role　on　the　interface.　This　paper　innovatively　improves　the　interface　bonding　between　Al　alloy　and　steel　through　the　combination　of　solid-state　FRAM　and　interface　design,　thereby　opening　up　a　new　pathway　for　the　manufacture　of　aluminum-steel　dissimilar　structural　components.