To provide a magnetically shielded room improved in workability during construction while sufficiently securing a magnetic shielding effect.SOLUTION: The inner wall comprises a permalloy inner wall 10 and a copper outer wall 50. The inner wall is formed by arranging a plurality of permalloy inner wall plate members 30 on the skeleton member 20, and the adjacent inner wall plate members are made of Permalloy inner wall Is bridged by the plate connecting member 40 and is screwed and fixed via an inner wall screw hole 15 formed so as to communicate with the inner wall plate connecting member, the inner wall plate member and the frame member, and the outer wall is disposed outside the inner wall A plurality of rectangular tubular strut members 60 and a plurality of copper outer wall plate members 70 are arranged, and the adjacent outer wall plate members are bridged by a copper outer wall plate connecting member 90, and the outer wall plate connecting member, the outer wall plate member, and the strut member , And the inner wall and the outer wall are integrally joined to each other via the inner column screw hole portion 65 formed on the inner surface of the support member and the inner wall screw hole portion As shown in FIG.(FIG.【課題】磁気の遮蔽効果を十分に確保しながら施工に際しての作業性を改善した磁気シールドルームを提供する。【解決手段】パーマロイ製の内壁10と銅製の外壁50とを備え、内壁は、骨格部材20にパーマロイ製の内壁板部材30が複数配列されてなり、隣り合う内壁板部材同士はパーマロイ製の内壁板連結部材40により架設され、内壁板連結部材と内壁板部材と骨格部材に連通されて形成された内壁ねじ孔部15を介して螺着固定され、外壁は、内壁の外側に配設された角筒状の支柱部材60と銅製の外壁板部材70が複数配列されてなり、隣り合う外壁板部材同士は銅製の外壁板連結部材90により架設され、外壁板連結部材と外壁板部材と支柱部材の外側面に連通されて形成された外壁ねじ孔部55を介して螺着され、内壁と外壁は支柱部材の内側面に形成された内支柱ねじ孔部65と内壁ねじ孔部を介して一体に螺着固定されてなる。【選択図】図3
