To provide a brace structure capable of becoming independent of axial rigidity and strength in the brace to easily adjust the rigidity of the brace by having a member for receiving axial force acting on the brace with shear deformation to exclusively receive tensile force acting on the brace and compressive force with the shear deformation member.

A middle part of the brace 20 is divided into two pieces, link members 28 making shear deformation to both axial relative displacements lie between the divided first and second brace pieces 20a and 20b through first axial force transferring members 24 and a second axial force transferring member 26, both brace pieces 20a and 20b divided through the link members 28 are connected to each other to make it possible to receive the axial tensile force of the brace 20 and compressive force with the shearing deformed link members 28, and axial rigidity and strength as the whole brace 20 is capable of becoming independent to easily adjust rigidity of the brace 20.