PURPOSE: To provide a method and a device for replenishing toner by which toner is supplied by easy operation and in which a toner storing container is not made disposable.

CONSTITUTION: A bag-like container 20 in a state where a 1st cover is uncovered is inserted in a toner tank 1 in a state where the cover of the toner tank is uncovered in a direction shown by an arrow B, and a grasp member for operation 15 is allowed to pass through a hole and pulled in the direction shown by the arrow B, so that the container 20 is pulled out through the hole of a hopper container 10. At such a time, the toner T is supplied in the container 10 through the part of the bag member 11 of the container 20, which is cut up by the cutter part of a cutting-up member 14, and an aperture on one end side of the member 11.