A toner replenishing device, comprising: a first container (15M, 15C, 15Y, 15Bk) which stores toner for replenishment, and has a discharge port of toner; a second container which has a replenishment port of toner, and stores replenished toner; a toner conveying portion which conveys the toner in a region between the discharge port and the replenishment port, the toner conveying portion including a vertical conveying portion for vertically conveying the toner, and a horizontal conveying portion for receiving the toner from the vertical conveying portion and horizontally conveying the received toner; a conveying member which is disposed in the horizontal conveying portion, the conveying member including a shaft member extending in an extending direction of the horizontal conveying portion, and a projecting portion formed around the shaft member, the conveying member being adapted to convey the toner by being rotated about an axis of the shaft member; a toner loosening member which is disposed in the vertical conveying portion to be swingable up and down; and a swinging member which is disposed at a connecting portion between the vertical conveying portion and the horizontal conveying portion to be contactable with the conveying member and the toner loosening member, wherein the swinging member is a spherical member contacted with the conveying member by the weight of the spherical member, the conveying member is a conveying screw having the shaft member, and a blade portion formed spirally around the shaft member, as the projecting portion, a lower part of the spherical member is contacted with the conveying screw, the spherical member swings up and down in accordance with a change of a contact portion of the spherical member with respect to the conveying member between the shaft member and the projecting portion, as the conveying member is rotated, a horizontal movement of the spherical member is restricted by a wall surface for dividing the vertical conveying portion, and the toner loosening member swings up and down, as the spherical member swings, characterized in that the toner loosening member is a member having a coil spring shape, the toner loosening member having a circular ring portion at a lower end thereof, the circular ring portion having an inner diameter smaller than a diameter of the spherical member, the circular ring portion is slidably received in an upper part of the spherical member by the weight of the toner loosening member. a first container (15M, 15C, 15Y, 15Bk) which stores toner for replenishment, and has a discharge port of toner; a second container which has a replenishment port of toner, and stores replenished toner; a toner conveying portion which conveys the toner in a region between the discharge port and the replenishment port, the toner conveying portion including a vertical conveying portion for vertically conveying the toner, and a horizontal conveying portion for receiving the toner from the vertical conveying portion and horizontally conveying the received toner; a conveying member which is disposed in the horizontal conveying portion, the conveying member including a shaft member extending in an extending direction of the horizontal conveying portion, and a projecting portion formed around the shaft member, the conveying member being adapted to convey the toner by being rotated about an axis of the shaft member; a toner loosening member which is disposed in the vertical conveying portion to be swingable up and down; and a swinging member which is disposed at a connecting portion between the vertical conveying portion and the horizontal conveying portion to be contactable with the conveying member and the toner loosening member, wherein the swinging member is a spherical member contacted with the conveying member by the weight of the spherical member, the conveying member is a conveying screw having the shaft member, and a blade portion formed spirally around the shaft member, as the projecting portion, a lower part of the spherical member is contacted with the conveying screw, the spherical member swings up and down in accordance with a change of a contact portion of the spherical member with respect to the conveying member between the shaft member and the projecting portion, as the conveying member is rotated, a horizontal movement of the spherical member is restricted by a wall surface for dividing the vertical conveying portion, and the toner loosening member swings up and down, as the spherical member swings, characterized in that the toner loosening member is a member having a coil spring shape, the toner loosening member having a circular ring portion at a lower end thereof, the circular ring portion having an inner diameter smaller than a diameter of the spherical member, the circular ring portion is slidably received in an upper part of the spherical member by the weight of the toner loosening member.