The invention discloses a nozzle stub correcting and stamping die which comprises a base. A motor is arranged on one side of the upper portion of the base. The motor is connected with a stamping device, away from the motor, of a mechanical arm. The stamping device is internally provided with an inner die body extending out of a stamping device shell. An outer die body is arranged at the position, located below the inner die body, of the base. Screw holes are formed in a plate surface of a fixing plate protruding out of the bottom of the outer die body in a penetrating mode. The inner die body is cylindrical and higher than the outer die body. A to-be-stamped nozzle stub is placed in the position between the inner die body and the outer die body. By adoption of the nozzle stub correcting and stamping die, a traditional handle type manual stamping mode is changed, mechanical operation is used, a gap between the outer wall of the inner die body and a cavity of the up-down through cylindrical structure of the outer die body forms an extrusion correcting molding die for the nozzle stub, and welding seam convexes and concaves, and burrs on the inside and outside of the nozzle stub are corrected or rubbed down, later machining is facilitated, the burden of workers is reduced, and the working efficiency and machining effect are improved.