The microstructures and properties of 2A12 aluminum alloy forgings in T6 heat treated state after hot forging and warm forging were observed and analyzed by the methods of OM, SEM, EBSD and mechanical properties testing at room temperature. The research results show that the distortion energy of warm forging is larger, which improves the recrystallization degree of 2A12 aluminum alloy forgings in T6 heat treated state, the fracture mode of core in high direction changes from brittle fracture to mixed fracture of ‘brittle+transcrystalline dimple’, and the elongation of core in high direction is greatly improved with the reduced volatility. The elongation of core in high direction is the best during the warm forging with 20% deformation, and the increased range is up to 29.2%. In the case of warm forging with the same deformation, the fibrous extruded grains are mainly (110) and (100), with more small-angle grain boundaries and lower grain boundary interface energy, which makes the driving force required for recrystallization larger, so it is more difficult for the fibrous extruded grains to recrystallize. During the warm forging with 10% deformation, a small amount of fibrous extruded grains are recrystallized, and during the warm forging with 20%-30% deformation, the fibrous extruded grains are completely recrystallized with more uniform microstructure, and the anisotropy becomes smaller, so the fluctuation of mechanical properties at different positions is reduced.