A paper feeding device comprises a machine body. The machine body is internally provided with two paper clamping arms used for clamping a paper cylinder. The two sides of the exterior of the machine body are provided with two supports correspondingly. A pull roll and a first pinch roll matched with the pull roll are arranged between the two supports. A first conveying roll is arranged above the pull roll, a second conveying roll is arranged above the paper clamping arms in the machine body, a second pinch roll matched with the second conveying roll is arranged below the second conveying roll, and a third conveying roll is arranged on the outer side of the top of the machine body. A shaft of the pull roll, a shaft of the first conveying roll, a shaft of the second conveying roll and a shaft of the third conveying roll are parallel to the paper cylinder. The shafts on the same sides of the pull roll, the first conveying roll, the second conveying roll and the third conveying roll are sleeved with the same conveyor belt, the conveyor belt penetrates the top of the machine body and is connected with a hauling cable, and the other end of the hauling cable is provided with a connection piece which can be connected with the end portion of paper on the paper cylinder. The hauling cable connects the paper with the conveyor belt, when the conveyor belt moves, the paper will be driven to the part between the pinch roll and the first conveying roll along with the hauling cable, and in this way, the paper feeding operation is simplified.