Simultaneously　achieving　high　energy　product　and　high　coercivity　in　the　2:17-type　Sm-Co-Fe-Cu-Zr　high　temperature　magnets　has　been　closely　relied　on　long-term　isothermal　aging　to　develop　complete　cellular　nanostructure.　In　this　work,　we　report　a　novel　stress-aging　approach　that　can　substantially　shorten　the　aging　time　to　fabricate　high-performance　Sm-Co-Fe-Cu-Zr　magnets.　As　exhibited　by　a　model　magnet　Sm25Co50.2Fe16.2Cu5.6Zr3.0　(wt.%),　applying　90　MPa　compressive　stress　can　shorten　the　aging　time　from　20　h　for　conventional　isothermal　aging　to　10　h　at　the　same　aging　temperature　for　achieving　nearly　equivalent　magnetic　performance.　Further　comparative　study　between　the　10　h-aged　samples　under　stress-containing　and　stress-free　conditions　revealed　that　the　stress　not　only　promotes　the　precipitation　of　the　cell　boundary　phase　that　are　essential　for　enhancing　the　coercivity　but　also　accelerates　the　dissociation　of　the　cell　edge　defects　that　are　detrimental　to　squareness　factor,　without　destroying　the　[001]　crystallographic　texture.　Such　microstructural　improvements　enable　the　achievement　of　high-performance　with　maximum　energy　product　of　∼30　MGOe　and　coercivity　above　35　kOe　at　reduced　aging　time.　©　2021