To inexpensively provide a hinge with a damper by assembling the hinge with the damper in a single operation.

The axis 50X of a pivotally moving part 50 of an arm member 40 and the damper 60 are stored while expanding openings of upper-lower plate pieces 22U and 22L of a substantially U-shaped installation bracket 20. The arm member 40 and the damper 60 are rotatably supported by the installation bracket 20. The damper 60 is composed of a damper disc 64 stored in a case with a circular recessed part of the arm member 40 as the case.