The invention discloses an automatic straightening and tailoring multi-elbow forming machine. The machine comprises a straightening mechanism, a clutch feeding mechanism, a multi-elbow tailoring mechanism and a sizing mechanism arranged in sequence; the multi-elbow tailoring mechanism includes at least two bending devices arranged in the material conveying direction, and a tailoring device; the tailoring device is positioned between the bending devices; the bending devices are provided with bending pins and center pins for clamping bar-shaped materials, and bending oil cylinders for driving the bending pins to rotate around the center pins; a tailoring oil cylinder is arranged on the tailoring device; and the tailoring oil cylinder and the bending oil cylinders are triggered to act in sequence according to an oil way oil supply sequence. The automatic straightening and tailoring multi-elbow forming machine is provided with the multi-elbow tailoring mechanism, uses multiple bending devices for bending the bar-shaped materials by various shapes, is high in practicability, needs a numerical control system to control, is not easy to damage, and is convenient for maintenance.