The　effects　of　homogenization　treatments　on　the　precipitation　behavior　of　Al-3(Er,Zr)　particles　and　theirs　effects　on　recrystallization　resistance　in　a　new　type　Al-Zn-Mg-Er-Zr　alloy　have　been　investigated.　Four　different　homogenization　treatments,　conventional　one-stage　homogenization,　double-stage　homogenization　and　ramp　heating　homogenization　are　carried　out.　Compared　with　that　in　the　conventional　one-stage　homogenization,　a　finer　particle　size,　higher　number　density　and　volume　fraction　of　Al-3(Er,Zr)　particles　can　be　obtained　in　other　three　homogenization　treatments.　In　addition,　the　double-stage　homogenization　and　the　ramp　heating　homogenization　can　improve　the　Al-3(Er,Zr)　particles　distribution　and　minimize　the　width　of　precipitation　free　zone　in　the　region　near　the　grain　boundary,　and　provide　an　additional　but　nonnegligible　strengthening　effect　for　the　Al-Zn-Mg-Er-Zr　alloy.　The　difference　in　precipitation　behavior　of　Al-3(Er,Zr)　particles　lead　to　different　recrystallization　resistance.　The　high　recrystallization　resistance　can　be　attributed　to　the　larger　fv/r　ratio　of　Al-3(Er,Zr)　particles,　which　resulting　in　a　higher　Zener　drag　to　effectively　resist　the　recrystallization　in　Al-Zn-MgEr-Zr　alloy　during　hot　deformation　and　the　subsequent　thermal　processing.　Therefore,　under　the　same　annealing　time,　the　double-stage　homogenized　and　the　ramp　heating　homogenized　samples　can　achieve　a　significant　lower　recrystallized　fraction　compared　with　the　conventional　one-stage　homogenized　samples.