The microstructure evolution and recrystallization mechanism of compressed Al-10Mg alloy with and without addition of Sc and Zr have been observed through electron back-scattered diffraction (EBSD) and transmission electron microscope (TEM). Through precipitate of Al₃(Sc,Zr) precipitation, original grain is ferined. Also, flow stress can be increased. In the presence of Al₃(Sc,Zr) precipitation, dislocation motivation is impeded; concentration of dislocation in grain boundary yet, deformation band is decreased and not enough for nucleation of recrystallized grain; accumulation and annihilation of dislocation is affected. Recrystallization grain is formed through rotation of subgrain in Al-10Mg-Sc-Zr alloy. After which, recrystallization mechanism of Al-10Mg alloy was changed from discontinuous dynamic recrystallization (DDRX) into continuous dynamic recrystallization (CDRX).