The invention discloses equipment for machining an elbow through explorator extruding. The equipment comprises a lathe bed (1) fixed to the ground, a motor (2) and a main power hydraulic pump (3), wherein the motor (2) and the main power hydraulic pump (3) are fixed to the lathe bed (1); the elbow is formed through extruding cooperation of a bending forming die (4) fixed to the lathe bed (1) through a fastener and a pipe on a bracket (7) which is arranged on the lathe bed and can rotate; a hydraulic explorator guide plate device is arranged at the position, close to an initial bent part of a bend of the to-be-machined cored pipe, in the bracket (7); a core bar locking device (11) and a hydraulic core-pulling device (12) are arranged at the inner tail end of the bracket (7), and a core bar(13) and a core rod (14) can be fixed through the locking device; a clamp (10) is arranged on a fixed arm (5); and corresponding hydraulic devices are arranged at a rotary arm (6) and the fixed arm (5) so that an explorator guide plate (8) and the clamp (10) can be controlled. Traditional follow-up forming dies and fixed core rods are replaced by the fixed forming die and the follow-up core rod, the effect that correlating technical parameters of ultrathin-walled metal pipes after bending meet and exceed the industrial standards or national standards is ensured, and meanwhile, zero-allowance blanking is achieved.