Abstract: The rapid T6 heat treatment process of A356 aluminum alloy was investigated using pulsed magnetic field technology. The morphology and mechanical properties of the aging treated aluminum alloy were analyzed using optical microscopy, scanning electron microscopy and electron stretching machine. The aim is ensuring the mechanical properties and improving the factory production efficiency. The results show that the secondary dendrite arm spacing(SDAS) and eutectic Si size of the aluminum alloy are significantly lower than those of conventional aging and factory T6 heat treatment by applying the pulsed magnetic field during aging. The tensile strength of aluminum alloy with magnetic field aging for 70 min is 330MPa, without magnetic field aging for 70 min is 260 MPa, and the tensile strength of aluminum alloy with factory aging for250 min is 328 MPa. Pulse aging can shorten the aging time by 180 min while ensuring the strength of the alloy.