Steel structure fence based on building energy-saving technology

The invention relates to the technical field of steel structure fences, in particular to a steel structure fence based on a building energy-saving technology, which comprises a fence shell, and the fence shell is mounted on the outer layer of the fence; the fence comprises a fence shell and further comprises a fence body, pulley assemblies and clamping hook assemblies, the fence body is installed on the inner side of the fence shell and composed of three fence sliding plates, the fence sliding plates are installed in an internally-externally nested mode, the pulley assemblies are installed on the side edges of the fence sliding plates, and the clamping hook assemblies are installed in the nested intervals of the inner sides of the fence sliding plates. According to the fence, the fence sliding plate capable of sliding to ascend and descend is installed on the fence body, the lower-layer pull rod is meshed with the lifting rack in the meshing groove while the fence sliding plate is lifted layer by layer throug