Abstract: A beam-adjustable laser-assisted turning device, wherein a lathe X/Y-axis moving platform is fixed above a lathe moving guide rail; a lathe tool changing and positioning table is fixed above and on a side of lathe X/Y-axis moving platform; a beam-adjustable turning tool module is fixed on a side of lathe tool changing and positioning table; a beam fixing module is fixed above lathe X/Y-axis moving platform and on a side of lathe tool changing and positioning table; a laser beam emission module is fixed on a side of lathe tool changing and positioning table and beam-adjustable turning tool module through beam fixing module, and a laser emission port is maintained in a coaxial position with a laser beam directional hole; and a modulatable laser generator is fixed on a side of lathe bed and connected to a beam receiving port of laser beam emission module through a laser fiber.