The invention relates to the technical field of building walls, in particular to a green and environment-friendly building wall structure. The structure comprises a glass
curtain wall body, wherein the glass
curtain wall body comprises a step, supporting columns are fixedly installed at the top end of the step, supporting rods are fixedly installed on the inner sides of the two supporting columns,and a glass plate is fixedly installed on the front faces of the supporting rods. According to the structure, by arranging an electric sliding block, a cleaning looped
pile, a cleaning cylinder and acollecting mechanism, rainwater collected by the collecting mechanism is used for cooperating with the cleaning looped
pile to clean the glass plate, meanwhile, the structure only needs to be manually operated through a control panel during cleaning, and operation of workers is facilitated; and a collection box is adopted, so that the structure is more environment-friendly, resources are utilizedmore effectively and reasonably, in addition, the structure belongs to a hidden design, the overall attractiveness of the glass plate cannot be damaged, the aesthetic characteristics of the glass plate are reserved, and the structure is more easily accepted by people.