The hot-stamping quenching process is an advanced forming technique for thin-walled aluminum alloy parts with complex shapes, but is limited by the long standard T6 treatment time, such as no shorter than 12 h for 2219 aluminum alloy. In this paper, the fast two-step aging heat treatment process of 2219 aluminum alloy was investigated, by aging in dies with high-low temperatures to replace standard T6 treatment, and the effect of various aging conditions on the mechanical properties of the alloy was experimentally investigated. Firstly, the fast two-step aging experimental investigation was carried out to explore the effect of the first-step aging temperature and time, and the second-step aging time on the mechanical properties of the alloy. The results show that the yield and the ultimate strength of the alloy show a whole trend to decrease as the first-step aging temperature increases from 220 ℃ to 305 ℃ and the strength of the alloy increases as the second-step aging time increases from 0.5 h to 4 h. Then, according to the results of the fast two-step aging experiments, the range of the aging parameters was optimized, and based on this, an experimental study of the in-die aging process was carried out. The results show that the yield strength is not lower than 91% of the T62 state and the ultimate strength is not lower than 100% of the T62 state when the aging condition is 220 ℃/230 ℃/240 ℃×5 min+175 ℃×4 h. When the aging condition is 240 ℃×5 min + 175 ℃×4 h, the tensile strength of the alloy increases from 393 MPa to 419 MPa as the die contact pressure increases from 0.33 MPa to 1.82 MPa. Finally, the TEM analysis of several sets of specimens of the typical aging conditions including the aging condition of 240 ℃×5 min + 175 ℃×4 h was carried out to observe the morphology and distribution of the precipitations. The two-step high and low temperature ageing heat treatment process proposed in this paper reduces the total aging time by over 63% compared to the traditional aging process (175 ℃×12 h or 175 ℃×18 h) on the premise of ensuring the properties of the alloy, and significantly shortens the ageing cycle of thin-walled high-strength aluminum alloy stamped parts after forming.