In this study, a series of Mg-9Al plates were obtained from the initial 5 mm thickness by single-pass differential speed rolling (DSR), with a thickness reduction per pass of 10%, 20%, 40%, and 60%, corresponding to speed ratio of 2. The effect of different annealing temperatures and corresponding holding time on the microstructure, texture, and hardness were investigated. Key results showed that for the plates with deformation of 20%,40%, and 60%, which contained a lot of twins, the basal pole intensity decreased, and the hardness increased, resulted from the static recrystallization during the annealing processing. While, for the plate subjected to low deformation (10%), the basal pole intensity increased, due to the coarsening of the initial DRXed grains. In addition, some of the elongated grains remained un-recrystallized. This is attributed to the relative lack of formation of twins in these regions during rolling processing.