The invention provides an installing structure of an assembled bathroom bottom plate. The installing structure comprises a base layer,
ceramic tiles, an outer frame, a leveling
brick and a floor drain, wherein the
ceramic tiles are laid on the base layer, and a running water slope is arranged on the
ceramic tiles from the outside to the inside, the outer frame comprises an outer blocking strip, aconnecting strip and an inner blocking strip which are sequentially arranged from outside to inside, a positioning groove is formed between the outer blocking strip and the connecting strip, the height of the outer blocking strip is higher than the height of the connecting strip and the height of the inner blocking strip, the outer frame is in a
square shape and is arranged around the
ceramic tiles, the leveling
brick is positioned between the
ceramic tiles and the outer frame and are laid along the horizontal direction, and the floor drain is arranged in the middle position of the
ceramic tiles and communicates with a sewer. Compared with the prior art, the installing structure has the advantages that the structure improvement is conducted on the outer frame of the bottom plate, a part ofwall bricks are installed on the outer frame, the wall bricks can be further conveniently installed while the function of an original running water slope is ensured, the installation is rapid, and the
waterproofing performance of the bathroom is improved.