To obtain a file capable of binding a document such as a drawing not to be folded with a binding tool and at the same time, keeping the bound document fold-free, if the file body is folded.

This file is composed of a file body 1 foldable almost in the center, a binding tool 3 for binding a document attached to one of the inner end parts of the file main body 1 in freely detachable manner, and a bar for preventing the document bond with the binding tool 3 from becoming bent, attached to almost the center inside the file body 1.