The invention relates to a point-hanging installation system for a hallway facade modeling background wall. The system comprises a cultured stone, a fixing screw, a fixing chip, an aluminium-plastic panel, a base plate, a transverse wood keel and an in-wall fixing bolt, wherein the in-wall fixing bolt penetrates through the transverse wood keel and fixed on a concrete structure, the base plate isvertically fixed on the transverse wood keel, the aluminium-plastic panel is arranged on the surface of the base plate, the fixing screw is embedded in the fixing chip, the fixing chip and the fixingscrew are arranged on the aluminium-plastic panel, and the cultured stone is connected with a bolt head of the fixing screw. The point-hanging installation system for the hallway facade modeling background wall has the advantages that the structure is simple, the installation is convenient; the system is suitable for all indoor ultra-high hallway special-shaped cultured stone backgrounds, and avoids the occurrence of falling of the cultured stone during use.