A minimally invasive surgical (MIS) procedure is an ideal surgical procedure. Many MIS techniques have been reported in spinal surgery. In clinical practice, we often encounter two-level canal stenosis cases, in which one level shows instability and the other does not. In such a case, fusion surgery for one level and decompression surgery for the other level is ideal. LLIF/OLIF approached from the lateral side has been reported effective. MIS decompression techniques in the lateral decubitus position have never been reported. We devised a surgical method that can accomplish both fixation and decompression in a consistent lateral decubitus position.