In　the　present　work,　the　hot　deformation　behavior　and　microstructural　evolution　of　a　TiB2/Al-Zn-Mg-Cu-Zr　composite　were　studied.　Hot　compression　tests　were　conducted　within　a　temperature　range　of　370　degrees　C　to　490　degrees　C　and　a　strain　rate　of　0.001　s(-1)　to　10　s(-1).　We　established　the　Arrhenius　constitutive　equation　with　Zener-Hollomon　parameters　and　processing　maps　and　discussed　the　microstructural　evolution　during　hot　deformation.　The　results　indicated　that　the　safe　processing　parameter　region　falls　within　370　degrees　C-490　degrees　C　and　0.001　s(-1)-0.025　s(-1).　The　influence　of　the　strain　rate　on　the　safe　processing　range　is　more　dominant　than　that　of　deformation　temperature,　which　is　primarily　attributed　to　TiB2.　Dynamic　softening　is　primarily　governed　by　dynamic　recovery　(DRV).　Small　particles　(eta,　Al3Zr)　can　pin　dislocations,　promoting　the　rearrangement　and　annihilation　of　dislocations　and　facilitating　DRV.　Higher　temperatures　and　lower　strain　rates　facilitated　dynamic　recrystallization　(DRX).　Continuous　dynamic　recrystallization　(CDRX)　occurs　near　high-angle　grain　boundaries　induced　by　strain-induced　boundary　migration　(SIBM).　TiB2　and　large　second-phase　particles　generate　high-density　geometrically　necessary　dislocations　(GNBs)　during　hot　deformation,　which　serve　as　nucleation　sites　for　discontinuous　dynamic　recrystallization　(DDRX).　This　enhances　dynamic　softening　and　improves　formability.