PLDD (Percutaneous Laser Disk Decompressuer) is a new method of treating herniated discs. It uses a fine needle to puncture through the skin into the disc and introduces laser light into the disc with a fiber that is smaller than a needle, causing the nucleus pulposus to vaporize and disappear, thus removing the compression on the nerve and achieving The treatment objective is to remove the compression on the nerve. It has the characteristics of no bleeding, little damage, fast recovery and high safety, and the procedure takes only half an hour, which is a blessing for the majority of patients.