PLDD is the abbreviation of percutaneous laser disc vaporization decompression, which is one of the minimally invasive spinal surgery methods widely used in clinical practice. PLDD refers to the use of a 16G or 18G puncture needle to penetrate the diseased cervical/lumbar disc under the guidance of C-arm X-ray or CT, and then introduce 200-800μm optical fiber through the puncture needle, and then activate the laser treatment system to emit laser light to vaporize part of the nucleus pulposus of the disc, thereby reducing the pressure in the disc. This is a minimally invasive surgical method to reduce the pressure in the disc to treat disc herniation. The treatment process takes about 15-30 minutes and 85% of patients see immediate results after treatment. The patient can be discharged from the hospital about 3 days after surgery and is bedridden for 3-5 days. It is ideal for patients who do not have good results from non-surgical treatment therapy.