PURPOSE: To provide such an access unit block temporarily fixing device as capable of temporarily fixing an access unit block without assembling footings in an elevator path.

CONSTITUTION: An access unit block temporarily fixing device to temporarily fix a block, in which the access units of an elevator including a three-way frame 3, a door 5 and a sill are integrally formed, in an access area, has the locking portion 23 provided at the floor of a building as the access area and an alignment mechanism 9 including a L-shaped member 9a engageable with the locking portion 23 mounted at the lower part of an access unit block. The locking portion 23 is provided with a stopper to fix the access unit block with which the L-shaped member 9a is being engaged on the wall of the building, and the access unit block can be finely adjusted up and down by the alignment mechanism 9.