The invention relates to a construction method for dry-hanging stone materials for architectural decoration, which includes a supporting base, an electric lifting frame, a working plate, a fixing plate, a clamping mechanism, a supporting component and a driving mechanism, and an electric lifting frame is installed inside the supporting base. The top of the electric lifting frame is connected with a working plate, the upper end of the working plate is provided with a driving mechanism, the upper end of the driving mechanism is connected with a fixed plate, one side of the fixed plate is symmetrically provided with supporting components, and the side wall of the fixed plate is welded with a support plate, The end of the support rod is equipped with a clamping mechanism, the connecting rod is welded at the end of the support plate, the center of the bottom of the connecting rod is welded with a connecting block, the two side walls of the connecting block are provided with trapezoidal blocks, the two sides of the connecting block Both ends are connected with support blocks, and a trapezoidal groove is provided at the connection between the support block and the trapezoidal block. The invention is simple and convenient to operate. After construction, the stone slabs are parallel to each other without inclination, and the operation process is safe and reliable. .