The utility model relates to an expansion-rod conveying device, which comprises a base, at least one set of rotating rollers arranged on the base and a driving mechanism for driving the rotating rollers. Each set of rotating rollers includes a pressure roller and a propulsion roller, and a pressure roller groove and a propulsion roller groove are correspondingly arranged on the circumferential surfaces of the pressure roller and the propulsion roller. An expansion-rod clamping passage is formed at the tangent position where the pressure roller and the propulsion roller are in press fit to press the pressure roller groove and the propulsion roller groove. The pressure roller and the propulsion roller are driven to rotate in opposite directions by the driving mechanism. A guide plate is arranged at the rear end of the base and is provided with an expanding-rod guide passage which corresponds to the expansion-rod clamping groove. The expansion-rod conveying device has the advantages of simplicity in structure and operable convenience, labor is saved, and work efficiency is improved.