Abstract: To advance the development of aluminum-magnesium alloy products with heightened toughness and corrosion resistance, the microstructure, mechanics and corrosion properties of Al-6 Mg and Al-6 Mg-1 Zn alloy were studied systematically, and the strength-toughness mechanism and corrosion behavior were analyzed. The results show that, after stabilizing of the Zn microalloying Al-6 Mg alloy, the hardness increases from 132.95 HV to 155.47 HV, the tensile strength increases from 484 MPa to 555 MPa, with a mere 0.8% reduction in elongation. The addition of Zn facilitates the precipitation of the fine T phase(Mg₃₂（Al, Zn）₄₉). This has a dual effect: firstly, impeding dislocation restitution and providing a driving force for recrystallization; secondly, acting as a grain boundary pinning agent, effectively impeding the growth of recrystallized grains. The refinement of recrystallized grains, coupled with the presence of dense, fine precipitated phases within the crystal lattice, and the slowing of the dislocation density, which synergistically optimize the overall mechanical properties of the stabilized Al-6 Mg-1 Zn alloy. Furthermore, in comparison to the stabilized Al-6 Mg alloy, the Al-6 Mg-1 Zn alloy in the same state has a stronger corrosion resistance. This enhancement primarily stemmes from the more extensive discrete distribution of the T phase, comparing with β phase（Al₃ Mg₂） along the grain boundaries.