To smoothly execute operation for feeding a piece negative to a piece negative receiving body by preventing the piece negative from being rewound together by a piece negative guiding body.

In this piece negative feeding structure, a piece negative thrust body 18 is supported to freely move back and forth by a supporting frame, the piece negative 2a can be thrust from a cartridge 13 on a piece negative ejecting position side in the longitudinal direction of the negative 2a, and the 1st piece negative guiding body 20 is fixed by the supporting frame and the 2nd piece negative guiding body 21 is constituted to be freely switched between a guiding action state and a housed state where it is made to retreat to an upstream side in a guiding direction. The structure is provided with a control means controlling the thrust body 18 and the guiding body 21 to move back and forth. When the negative 2a is received by the piece negative receiving body 11, the control means makes the thrust body 18 retreat after the guiding body 21 is made to retreat and set in the housed state.