Abstract: An automatic line winding apparatus is mounted on a fishing rod and includes two plates fixed in the handle so as to define an accommodating chamber therebetween, a motor mounted in the accommodating chamber, a battery unit for driving the motor, and a switch starting or stopping the rotation of the motor shaft of the motor. A speed reduction mechanism interconnects the motor shaft and a reel shaft so as to transfer the rotation of the motor shaft to the reel shaft, thereby rotating the reel shaft at a lower speed than that of the motor shaft. A line guide is mounted on the outer surface of the handle and is connected to the motor shaft so as to move radially relative to the handle when the switch is turned on, thereby guiding the fishing line to wind evenly on the reel shaft.