Ｏｂｊｅｃｔｉｖｅ　To evaluate the safety and clinical outcomes of pulsed radiofrequency in the treatment of degenerative lumbar spinal stenosis.　Methods　Fifty?蛳six patients with degenerative lumbar spinal stenosis meet the inclusion and exclusion criteria were enrolled in the study. All patients received bilateral pulsed radiofrequency neuromodulation at the affected lumbar intervertebral space. Clinical outcomes were evaluated by the Modified Macnab criteria at 3， 6， 9 and 12 months postoperatively.　Results　The successful（excellent and good outcome） rate was more than 85% at 3， 6 months and more than 65% at 9， 12 months， respectively（P<0.05）. There was no major complication related to the procedure in all patients.　Conclusions　Pulsed radiofrequency neuromodulation to the dorsal root ganglion in the treatment of degenerative lumbar spinal stenosis is safe and effective， which can be an alternative treatment modality.