Adjustable building edge protection device

The utility model relates to the technical field of building edge protection, and provides an adjustable building edge protection device which comprises a protection assembly and at least two mounting assemblies, and the mounting assemblies are movably mounted on at least two structural columns correspondingly; the installation assembly comprises a hoop assembly and an overhanging supporting piece attached to the hoop assembly. The hoop assembly is hooped on the structural column; the protection assembly comprises a protection plate and a protection rod piece with the adjustable length. The two ends of the protection rod piece are movably connected with the overhanging supporting pieces installed on the different structural columns correspondingly. And the protection plate is movably connected with the protection rod piece. The building edge protection device is very wide in application range and is not limited by the size and the distance of the structural columns. Disassembly and assembly are convenient, an