The invention discloses a PPS plastic rod production device and a production method. The PPS plastic rod production device comprises a main machine and an auxiliary machine; the main machine is an extruder comprising an extrusion system, a rotating system, and a controlling system; the extrusion system is a gun barrel screw; the rotating system comprises a motor and a reduction box; the controlling system comprises electrical instruments and an executing mechanism; the auxiliary machine comprises a mould, a tractor, an oil temperature machine, a cutting machine, and a baking box; the mould comprises a main mould, a flow deflector, a thermal insulation gasket, a moulding shaping barrel, and a cooling water tank; the oil temperature machine is arranged on a setting segment of a moulding pipe; the tractor comprises a transmission device, a roller compressing device, and a brake device, and is arranged behind a thermal insulation device; the cutting machine is arranged behind a mould outlet; and the baking box is a sealed box. The production method comprises steps of feeding, drying, plastifying extrusion, homogenizing distribution, moulding / setting, traction, plate cutting / stockpiling, and thermal treatment.