Building wall expansion joint waterproof structure

The utility model discloses a building wall expansion joint waterproof structure, which relates to the technical field of building wall expansion joints, and particularly structurally comprises a waterproof plate, a base plate is fixedly mounted on the waterproof plate, a plurality of support columns are fixedly mounted on the base plate, a nut is fixedly mounted on the plurality of support columns, and a screw is rotationally mounted on the nut in a threaded manner. A clamping plate is fixedly installed on the screw rod, and a limiting structure and a stretch bending mechanism are installed between the clamping plate and the waterproof plate. The fixing device has the advantages that damage to the wall can be avoided, compared with bolt fixing adopted for drilling, the wall can be better protected through the fixing mode, meanwhile, the situation that bolts cannot be disassembled due to corrosion can be avoided, and practicability is higher. 本实用新型公开了建筑墙体伸缩缝防水结构，涉及建筑墙体伸缩缝技术领域，具体结构包括防水板，防水板上固定安装有垫板，垫板上固定安装有多个支