Green building energy-saving wall

The utility model discloses a green building energy-saving wall, which relates to the technical field of green buildings and specifically comprises a bearing plate, a clamping column is fixedly connected to one side surface of the bearing plate, a vertical keel is clamped to the bearing plate through the clamping column, a connecting piece is fixedly connected to one side surface of the vertical keel, and the connecting piece is fixedly connected to the other side surface of the vertical keel. The vertical keel is slidably connected with a transverse keel through a connecting piece, the top end of the vertical keel is slidably connected with a drainage piece, clamping blocks are clamped to the two sides of the drainage piece, and the drainage piece is clamped with a flow guide piece through the clamping blocks. Through the vertical keel, the transverse keel, the drainage piece, the backflow piece and the heat preservation layer on the bearing plate, the device can effectively avoid the possibility of erosion