The invention discloses a novel steel bar rib stripping and rolling thread machine tool. The novel steel bar rib stripping and rolling thread machine tool comprises a rack, a rib stripping and thread rolling mechanism, a clamp mechanism, a feeding mechanism, a reducer, an electric appliance control system and a cooling system. The rib stripping and thread rolling mechanism comprises a rib stripping assembly and a thread rolling assembly. The rib stripping assembly comprises a tool body, turning tools and a cutting head body. The turning tools are equidistantly fixed to the tool body in an external fixation mode. The tool body is connected with the cutting head body. The cutting head body is connected with the thread rolling assembly. The clamp mechanism comprises a screw rod, a clamp base, a clamp body and a clamping hand wheel assembly. The clamp body is provided with a clamp opening. The outer side of the screw rod is provided with a left-hand thread and a right-hand thread. According to the novel steel bar rib stripping and rolling thread machine tool of the structure and a machining method of the novel steel bar rib stripping and rolling thread machine tool, one-time axial feeding of the ends of steel bars can be achieved, so that the service life of blades and the service life of a thread rolling wheel are prolonged, the additional cost of connectors is greatly reduced, idle strokes in the steel bar machining process is decreased, the machining speed is increased, meanwhile, the appearance is beautiful, adjustment is convenient, and the automation degree is high.