PROBLEM TO BE SOLVED: To provide a treatment facility, though provided with a storage region wherein materials-to-be-conveyed are to be placed, having high degree of freedom with regard to the layout arrangement of internal regions and the storage region, the treatment facility having a plurality of treatment rooms wherein treated materials are obtained by treating materials-to-be-treated, and a conveyance region wherein materials-to-be-conveyed comprising materials-to-be-treated or treated materials are conveyed and delivered to and from the treatment rooms.SOLUTION: Distribution floors 2 wherein conveyance containers C are conveyed are provided below treatment floors 1 wherein a plurality of treatment rooms 21 are arranged in a planar manner, and delivery openings 22 are formed on floor surfaces 11 between the treatment floors 1 and the distribution floors 2, and the conveyance containers C are received and delivered between the treatment floors 1 and the distribution floors 2 via the deliver openings 22 by conveyance cars 5 which travel on the distribution floors 2. Further, shelves 71 for placing the conveyance containers C thereon are provided in the distribution floors 2 along a conveyance path along which the conveyance cars 5 travel.