A fuel injection control device has a detection unit, a correction value calculation unit, and a conduction time calculation unit. The detection unit detects a current increase speed that is a speed of increasing an electric current flowing in an electromagnetic coil in accordance with the start of conducting the electromagnetic coil during partial lift injection in which a valve body starts valve closing operation before the valve body reaches a maximum valve opening position after the valve body starts valve opening operation. The correction value calculation unit calculates a correction value for a requested injection quantity on the basis of the detected current increase speed. The conduction time calculation unit calculates a conduction time of the electromagnetic coil during the partial lift injection on the basis of the requested injection quantity corrected by the correction value.