The　multi-output　power　converters　using　different　architectures　can　have　significant　efficiency　advantages.　This　paper　proposes　a　multi-output　welding　power　supply　that　is　based　on　the　middle　DC　converter　distributed　architecture.　This　machine　includes　two　converter　groups,　each　group　is　composed　of　three-phase　rectifier　unit,　full-bridge　converter　unit,　HF　transformer,　rectifier　unit　and　chopper　converter　unit.　Among　them,　three-phase　rectifier　unit,　full-bridge　converter　unit,　High-Frequency　transformer　and　rectifier　unit　convert　the　three-phase　AC　voltage　into　a　low　voltage,　and　the　chopper　converter　unit　converts　the　low　voltage　into　the　required　current.　The　welding　power　supply　can　output　four　DC　current　and　two　AC　current.　This　paper　also　analyses　the　stability　of　the　welding　power　supply.　In　the　end,　a　prototype　is　designed　and　verified　by　experiments,　where　the　maximum　output　of　the　prototype　is　300　A.　The　experimental　results　showed　that　the　converter　can　output　multiple　different　DC　and　AC　currents　according　to　the　necessary　requirements,　and　the　multiple　outputs　are　independent　to　each　other,　and　the　output　current　phase　and　value　are　independently　adjustable.　After　verification,　the　proposed　multi-output　welding　power　supply　can　output　steady　current　according　to　different　requirements.　©　2022　IEEE.