Endoscopic-assisted minimally invasive lumbar interbody fusion treats complex lumbar spine disorders, including lumbar disc herniation, lumbar spinal stenosis, lumbar spondylolisthesis, and lumbar instability. The surgical concept is different from traditional open surgery. Its advantages include: less damage to the paravertebral muscles, light traction on the nerve tissue in the spinal canal, less adhesions in the spinal canal, significantly less postoperative complications of lumbar spine surgery failure syndrome, and fast postoperative recovery.