Abstract: Fe-Mn-Al-C low-density high-strength steel is widely used in fields demanding high material lightweight performance and excellent mechanical properties due to its low density and high strength. However, its low thermal conductivity and high toughness result in poor machinability. Moreover, substantial heat accumulation during machining softens the material, causing issues such as built-up edge, which further accelerates tool wear.To investigate the influence of different cutting parameters on cutting temperature, axial force and hole exit quality during the drilling process of low-density high-strength steel, a three-dimensional finite element model of gun drill and low-density high-strength steel was established. The effects of varying machining parameters on axial force, cutting temperature and exit quality were explored.The results indicate that during drilling, the cutting temperature increases with the rise of feed rate and spindle speed. The axial force increases as the feed rate increases, while it decreases with the increase of spindle speed. Additionally, the size and quantity of exit burrs decrease gradually with the increasing spindle speed, whereas they increase with the growing feed rate.To improve machining efficiency while ensuring machining quality, the feed rate and spindle speed can be appropriately increased. When the feed rate is set at 0.050 mm/r and the spindle speed at 2 500 r/min, the axial force and cutting temperature are at reasonable levels, and the hole exit features few and small burrs.