To provide a bar-shaped electronic tag container case with a band, capable of rapidly and accurately reading and writing data in one-button operation.

The bar-shaped electronic tag container case with a band is provided with a horizontal electronic tag 14 and a case body 12 having a container 13 containing and sealing the horizontal electronic tag 14, and a band fitting part 33, and provided with a guide section 22 attachable/detachable to/from a tag catcher 42 of the electronic lock 41 in the longitudinal end of the bar-shaped electronic tag container 13 in the case body 12 so as to be orthogonal thereto.