The invention discloses a preheating toner cartridge, and belongs to the field of toner cartridges. The preheating toner cartridge comprises a cartridge body and a preheating mechanism, the preheating mechanism is arranged on the cartridge body and is positioned at the paper feeding site of the photosensitive drum of the cartridge, and the preheating mechanism is used for preheating paper. Preheated paper passes through carbon powder adhered to the photosensitive drum and realizes a high initial temperature for the thawing of the carbon powder in a fixing roller, so the carbon powder is fast thawed, the thawing degree of the carbon powder is increased, the printing sharpness is improved, and the printing effect and the paper discharging speed of a printer are improved. The preheating mechanism comprises a driving roller and a driven roller, a cavity is arranged in the driving roller, and a heater is arranged in the cavity; and a driving gear is arranged at the end portion of the driving roller, a driven gear is arranged at the end portion of the driven roller, the driving gear and the driven roller mutually cooperate, and the driving gear drives the driven gear to rotate in order to make the driving roller and the driven roller rotate at the same linear velocity. The driving roller and the driven roller of the preheating toner cartridge are driven by the gears to rotate in order to make the paper be static and affect the adhesion of the carbon powder in the photosensitive drum.