In a structure for mounting a radar, a cross linking member vertically connects two width-across members aligned in a front-to-rear direction of a vehicle. A fixing member is fixed to the cross linking member. The fixing member includes a fixing part fixed to the cross linking member, a supporting part that supports a radar device, a deformable part. The deformable part has a shape connecting the fixing part and the supporting part and bends and deforms to absorb shock when an external force is input into the radar device.