This　paper　investigates　the　impact　of　pre-precipitated　η　phases　and　Al3(Er,　Zr)　particles　on　the　hot　workability　and　recrystallization　behavior　of　an　Al–Zn–Mg–Er–Zr　alloy.　The　optimal　pre-precipitation　heat　treatment　prior　to　hot　deformation　was　obtained　by　heat　treatment　under　different　conditions　combined　with　microstructure　analysis.　Subsequently,　hot　compression　tests　were　conducted　to　establish　the　processing　maps,　and　the　influence　of　pre-precipitation　on　the　microstructure　and　the　hot　workability　under　various　thermal　deformation　conditions　were　analyzed.　Furthermore,　the　effect　of　pre-precipitation　of　η　phases　and　Al3(Er,　Zr)　particles　on　the　recrystallization　was　studied.　The　results　demonstrate　that　after　the　optimized　pre-precipitation　treatment,　a　multitude　of　Al3(Er,　Zr)　particles　(∼10　nm)　and　η　phases　(∼1　μm)　appeared　in　the　alloy.　Through　this　pre-precipitation　treatment,　the　flow　stress　was　significantly　reduced,　and　the　hot　workability　of　the　alloy　was　significantly　enhanced,　particularly　at　low　temperatures　and　low　deformation　rates.　Moreover,　the　pre-precipitated　η　phases　facilitated　recrystallization,　refined　grains　and　hence　created　a　more　homogeneous　microstructure.　Concurrently,　during　the　recrystallization　process,　the　precipitated　Al3(Er,　Zr)　particles　impeded　grain　boundary　migration,　and　thus　inhibited　the　growth　of　recrystallized　grains,　contributing　to　grain　refinement.　©　2024　The　Authors