The invention discloses a paper core restoration device for deformation roll paper. The paper core restoration device comprises a positioning shaft. The two ends of the positioning shaft are provided with pin holes in the axial direction. The two ends of the positioning shaft are provided with a conical sleeve A and a conical sleeve B. The big end of the conical sleeve A is provided with a pin hole. The end face of the outer side of the conical sleeve B is further provided with a thread hole. The end face of the outer side of the conical sleeve B is provided with a top sleeve. The end face of the inner side of the top sleeve is provided with a boss. A thread is machined in the surface of the boss. The boss is matched with the thread hole. The end face of the outer side of the top sleeve is provided with a positioning disk. The outer circumferential surface of the top sleeve is provided with a handle. The outer circumferential surface of the positioning disk is provided with a plurality of pin holes. According to the paper core restoration device, a paper core hole is expanded through the conical sleeve A and the conical sleeve B simultaneously, so that the deformed paper core hole is recovered into a concentric-circle shape, and finally the outer surfaces of the conical sleeve A and the conical sleeve B make contact with the paper core hole tightly, and accordingly the roll paper is prevented from swinging in the paper feeding process.