To provide a paper feeding cassette structure capable of improving workability during the putting-in/out of a paper feeding cassette, and the easy putting-in/out of the paper feeding cassette, and an image forming device.

The paper feeding cassette structure is provided with a cassette body 14, a supporting part 11, an operation member 16 and a fixing mechanism 17. The cassette body 14 stores paper. The supporting part 11 movably supports the cassette body 14. The operation member 16 is provided in the cassette body 14. The fixing mechanism 17 fixes the cassette body 14 at an arbitrary position of a moving direction by being interlocked with an operation of the operation member 16.