To provide an inspection device of a buckling restricting brace facilitating inspection of a load history after an earthquake, by making use of properties of the buckling restricting brace and by a simple structure.

The inspection device 10 of the load history of the buckling restricting brace 1 comprises a core material 2 and a restricting material 4 restricting the buckling while allowing longitudinal expansion and contraction of the core material 2. Inspecting rupture materials 15 which are ruptured when a predetermined amount of expansion and contraction are caused are connected between the core material 2 and the restricting material 4. A plurality of the inspecting rupture materials 15 are arranged side by side, and the predetermined amounts causing the rupture to the inspecting rupture materials 15 are made different from one another.