Alloy　composition　and　heat　treatment　processes　have　limited　possibility　to　enhance　ultra-high　strength　of　aluminum　alloys,　which　restricts　their　widespread　application　in　lightweight　equipment.　Consequently,　high-density　dislocations　and　grain　refinement　are　suggested　to　strengthen　ultra-high　strength　aluminum　alloys.　Herein,　a　novel　nanostructured　Al-Zn-Mg-Cu-Zr-Sc　(AZMCZS)　alloy　with　homogeneous　microstructure　is　prepared　through　the　synergistic　processing　of　hot　extrusion　and　high-pressure　torsion.　Additionally,　the　microstructures　and　strengthening　mechanisms　of　the　nanostructured　Al　alloy　are　analyzed.　It　is　observed　that　the　ultimate　tensile　strength　of　the　nanostructured　Al　alloy　reaches　nearly　1　GPa,　and　the　elongation　of　the　alloy　is　1.9%.　The　nanostructured　Al　alloy　mainly　consists　of　nanoscale　grains　(approximate　to　117.7　nm),　high-density　dislocations　(2.4　x　1015　m-2),　nano-sized　precipitates　(the　size　of　20-51　nm),　and　solute　atom　clusters　(approximate　to　3　nm).　The　multiple　strengthening　mechanisms　of　the　nanostructured　Al　alloy　are　revealed　in　terms　of　grain　refinement,　dislocations,　precipitates,　and　solute　atom　clusters.　Grain　refinement　and　dislocation　strengthening　show　superior　outcomes　and　are　considered　to　be　the　predominant　strengthening　mechanisms.　These　findings　demonstrate　that　this　nanostructural　architecture　offers　a　new　way　to　design　super-strength　metals　and　alloys　by　effectively　controlling　the　processing　regime　of　severe　plastic　deformation.　A　nanostructured　Al-Zn-Mg-Cu-Zr-Sc　alloy　is　designed　and　successfully　prepared　through　synergy　processing　of　hot　extrusion　and　high-pressure　torsion　(HPT).　The　average　grain　size　of　the　nanostructured　alloy　prepared　by　HPT　is　about　117.7　nm.　The　nanostructured　alloy　exhibits　a　ultra-high　tensile　strength　of　970　MPa,　and　approaching　1　GPa　level　strength.image　(c)　2024　WILEY-VCH　GmbH