Building curtain wall structure

The utility model provides a building curtain wall structure, and belongs to the field of building curtain walls. According to the technical scheme, the device comprises a stand column, a first supporting frame is fixedly installed on the lower side of the right surface of the stand column, a second supporting frame is fixedly installed on the upper side of the right surface of the stand column, sliding grooves are formed in the upper surface of the first supporting frame and the bottom of the second supporting frame, and sliding blocks are movably installed in the sliding grooves in the surfaces of the first supporting frame and the second supporting frame; a movable curtain wall is fixedly installed on the inner side of the sliding block, a supporting column is fixedly installed in an inner cavity of the second supporting frame, a limiting block is fixedly installed at the other end of the supporting column, a limiting spring is arranged on the outer surface of the supporting column, and a driving rod is mo