Abstract: Building walls are mounted to the frame of a building by using a plurality vibration absorbers, and therefore vibrations to the building are barely transmitted to the walls. The occurrence of cracks and breaks in external walls due to vibrations can be suppressed as much as possible, especially because the second vibration-absorbing material of the vibration absorber which is inserted into the mounting holes of the top and bottom mounting fixtures in the frame, and the first vibration-absorbing material which makes contact with the surface of external walls both have seismic isolation functions against vibrations from all directions such as horizontal, vertical, and diagonal. Secondary injury to persons and damage to objects due to breaks, and falling pieces, in external walls can be reduced. An independent seismic isolation function to each external wall mounted in each space of a frame is created.