The invention belongs to the technical field of urea filling pumps, and particularly relates to a urea filling pump. The urea filling pump comprises an impeller, a transmission mechanism, a partitionplate and the like. A liquid inlet channel and a liquid outlet channel are arranged on a pump body. The urea filling pump is provided with the impeller; the impeller can enable urea entering the pumpbody to flow rapidly under the drive function of the transmission mechanism; an adjusting gear for adjusting movement of a blade in the impeller is arranged in the transmission mechanism; a movement adjusting gear can drive an adjusting gear ring to move; and through the adjusting function of the transmission mechanism, the mounting position between soft blades mounted on the adjusting gear ring changes, the impeller can achieve the aim of adjusting the flowing speed for the urea entering the impeller, and the aims that the flowing speed of flowing media in the urea filling pump is jointly controlled by a motor device and a servo motor in the transmission mechanism, and therefore the flowing speed of the flowing media in the urea filling pump is precisely controlled are achieved.