The utility model provides a paper delivery device, which comprises a shell and a paper guide plate arranged in the shell; the paper delivery device is provided with a paper inlet and a paper outlet; and the paper delivery device further comprises a lower paper pushing plate, wherein the lower paper pushing plate is articulated to one end of the paper inlet of the paper guide plate, and a region above the paper inlet, the paper outlet and the lower paper pushing plate of the paper delivery device is a paper conveying channel. Compared with the prior art, the paper delivery device has the beneficial effects that: due to adoption of a mode of outputting printing paper in a curved manner and arrangement of the lower paper pushing plate, when being pushed manually, the printing paper is pulled to form an approximately straight line from the curve, the straightened printing paper applies force to the lower paper pushing plate to oppress the lower paper pushing plate to swing, a swinging signal is detected by a first sensor, and therefore a paper delivery behavior that the printing paper is pulled in the printing process is judged so as to take processing measures in time, and waste of printing paper and damage of a printer are avoided.