The invention discloses a roll turning center of a numerical control double-motor tensile reducer, which consists of a tool bed, an upright post, a workpiece conveyer, a double-motor main transmission device, a numerical control base slide table, a numerical control cutter frame, an automatic measuring device, a workpiece clamping device, a cutter tool system, a dust discharge device, a measuring reference corrector, a workpiece axial centering device, an automatic lubricating device, an electric control part and a hydraulic part. The roll turning center of the numerical control heavy double-motor tensile reducer integrates numerical control, intellectualization, high efficiency, high precision and large scale into a whole and is used for processing roll hole types of two-roll sizing mills, tensile reducers and pipe extractors. The invention also discloses a processing method.