The utility model relates to an automatic decoiling device for a hot-rolled vertical coil, which comprises a base, a rotating disc, stand columns, a supporting rod, traveling wheels and a motor, the supporting rod is vertically fixed at the top end of the base, the top end of the supporting rod is connected with the rotating disc through a bearing, the rotating disc is parallel to the base, the bottom of the rotating disc is provided with the traveling wheels, the traveling wheels are pressed on the base, one traveling wheel is connected with the motor, and the side of the base is provided with the stand columns. The device disclosed by the utility model has the advantages that the structure is simple, the operation is simple, and the working efficiency can be effectively improved. The device can be widely used for the field of steel plate production.