To provide a magnetic-attraction device having both adsorption force and magnetic attraction force without damaging an opposite wall to be set.

The wall magnetic-attraction device has a structure comprising a protection frame 2 for protecting and supporting a doughnut-shaped magnet or the protection frame further provided with a suction function at the outer periphery and a sucker 21 in the center. Therefore, the device has both the magnetic attraction force by the magnet and a vacuum adsorption force by the sucker.