PURPOSE: To easily move a moving wall by providing a turn table on the crossing point of a plurality of ceiling rails, and suspending a moving wall from the ceiling rails through a running body and a suspending beam.

CONSTITUTION: When both running motors 84 of each moving wall 5 are operated, sprockets 82 engaged with chain are rotated to make both running bodies 6 crawl in a ceiling rail 11. When the moving wall 5 is reached to a crossing point, the motors 84 are stopped, and a turn table is rotated at 90° by a table driving mechanism. Then, only the motor 84 for driving the running body 6 on the advancing direction front side is operated, while the current sending to the motor 84 for driving the running body 6 on the advancing direction rear side remains stopped. The moving wall 5 is moved while rotating by the front side running body 6, and when the moving wall 5 is turned nearly at 45°, the current sending to the motor 84 is interrupted. The turning of the moving wall 5 is continued by the rear side running body 6, and when the moving wall 5 is reached to the crossing point, the both motors 84 are again operated to move the moving wall 5.