The invention discloses a metal product machining bending machine with a discharging structure. The metal product machining bending machine comprises a rack, a main bottom plate, a bending mechanism, a discharging mechanism, a discharging mechanism, a first supporting fixing base, a mechanical arm fixing base, a discharging mechanical arm, a suction cup fixing base, a suction cup connecting plate and a material taking suction cup. A discharging mechanical arm at the middle position of the top of a mechanical arm fixing seat is controlled to work through an operation panel, a suction cup connecting plate at the top of a suction cup fixing seat is driven to synchronously work at the middle position of the top of a first supporting fixing seat, and a material taking suction cup and a bent metal product synchronously work; according to the metal product bending device, the bending radian is adjusted, the phenomenon that when a metal product is bent, the metal product jumps due to the bending radian is avoided, so that the safety risk in the bending process is reduced, automatic discharging work is conducted after bending, the bent metal product is placed in the discharging mechanism, the workload of workers is greatly reduced, and the working site in the working process is greatly reduced.