To provide a wall locking structure and wall suspending method which enables the suspending of a large panel without providing a suspension reinforcing member for the large panel as a wall.

A large panel (a wall) 1 has a vertical insertion hole 18 in a vertical bar 6. It also has a locking hole 19 perpendicular to the insertion hole 18. The insertion hole 18 and the locking hole 19 are obtained by forming vertical grooves and lateral grooves in the vertical joint ends of the wall panels constituting the large panel 1 and jointing the wall panels together. A cross fixture 11 is inserted into the insertion hole 18 and the locking pieces 11b, 11b of the cross fixture 11 are protruded to be insert into the locking holes 19, 19. In this way, the cross fixture 11 is locked to the vertical bar 6 of the large panel 1 to suspend the large panel 1. When the large panel 1 is suspended, load of the large panel 1 is applied to the vertical bar 6 and so the large panel 1 can be suspended without reinforcing the bar 6.