To provide a binder stationery that has high functionality, and is applicable to general documents that are not loose-leaf sheets.

The binder stationery 1 includes: a series of a binding part, a first connection part 3, a body 4, a second connection part 5, and a cover part 6; and a binder member 7 for binding sheets. The cover part 6 can be locked at the binding part 2 by inserting an end portion 61 of the cover part 6 into an end portion 21 of the binding part 2. The binder member 7 includes a first engagement member 71 provided at the binding part 2, and a second engagement member 72 provided on a surface 41 of the body 4 and at a position corresponding to the first engagement part 71, and engageable with the first engagement member 71.