1.Basically no bleeding: PLDD surgery is performed by inserting a 1.3 mm diameter puncture needle into the herniated disc segment under DSA fluoroscopic guidance, so there is basically no bleeding. 2, only local anesthesia can be treated: local anesthesia is administered in the skin and muscle of the puncture site, and certain patients with heart disease and diabetes who cannot undergo general anesthesia can also receive the procedure. 3.Short hospital stay or no hospital stay: from the injection of anesthetic to the end of the operation, it takes about 30 minutes. You can basically resume your normal life 3 days after the surgery. 4.No scars: Since only fine needles are inserted into the body to put in the laser fibers, there are no scars left on the skin as in previous surgeries. 5, high efficacy: among the patients treated with PLDD, 60% were cured on the same day after surgery, 20% were cured one week after surgery and 10% were cured one month after surgery, which is comparable to the effect of open surgery. 6, high safety: to overcome the occurrence of complications such as spinal instability and nerve root injury caused by open surgery.