In this paper, laser-assisted heating technology is introduced. On the basis of heat transfer theory model, the temperature field distribution of 2024 aluminum alloy material under laser heating condition is obtained by using the finite element analysis software COMSOL Multiphysics, and the influence of laser parameters on the surface and depth direction temperature field is studied. The simulation results show that the surface temperature of aluminum alloy can be improved obviously by laser heating assisted machining. The maximum temperature at laser center on aluminum alloy surface increases with the increase of laser power. It decreases with the increase of spot size. At the same time, in the depth direction, with the accumulation of heating time, the laser heating assistant has a certain warming effect, and the heat accumulation effect of laser heating is significant. In terms of the uniformity of the surface temperature field distribution, the uniformity is best in the high temperature region, namely 300 ℃ to 390 ℃, the power is 20 W, the laser radius is 0.10 mm; The temperature uniformity is best when the power is 20 W and the radius is 0.15 mm in the medium temperature region, 200 ℃ to 300 ℃. Temperature uniformity is best in the low-temperature region, 60 ℃ to 180 ℃, with a power of 10 W and a radius of 0.10 mm.