The hot deformation behavior of homogenized Mg–6.5Gd–1.3Nd–0.7Y–0.3Zn alloy was investigated during compression at temperatures of 250–400 ℃ and at strain rates ranging from 0.001 to 0.100 s~(-1). Microstructure analyses show that the flow behaviors are associated with the deformation mechanisms. At the lower temperatures(250–300 ℃), deformation twinning is triggered due to the difficult activation of dislocation cross-slip. Dynamic recrystallization(DRX) accompanied by dynamic precipitation occurs at the temperature of 350 ℃ and influences the softening behavior of the flow.DRX that develops extensively at original grain boundaries is the main softening mechanism at the high temperature of 400 ℃ and eventually brings a more homogeneous microstructure than that in other deformation conditions. The volume fraction of the DRXed grains increases with temperature increasing and decreases with strain rate increasing. The hot deformation behavior of homogenized Mg-6.5Gd-1.3Nd-0.7Y-0.3Zn alloy was investigated during compression at temperatures of 250-400 ℃ and at strain rates ranging from 0.001 to 0.100 s -1. Microstructure analyzes show that the flow behaviors are associated with the deformation mechanisms. At the lower temperatures (250-300 ° C), deformation twinning is triggered due to the difficult activation of dislocation cross-slip. Dynamic recrystallization (DRX) accompanied by dynamic precipitation occurs at the temperature of 350 ° C and influences the softening behavior of the flow. DRX that develops extensively at original grain boundaries is the main softening mechanism at the high temperature of 400 ° C and eventually brings a more homogeneous microstructure than that in other deformation conditions. The volume fraction of the DRXed grains increases with temperature increasing and decreases with strain rate increasing.