Abstract:[Objective] To analyze the surgical techniques and efficacy of percutaneous transforaminal endoscopic discectomy (PTED) in the treatment of calcified lumbar disc herniation. [Methods] We selected 17 patients who were diagnosed with calcified lumbar disc herniation from January 2017 to October 2020 in our hospital. According to the preoperative CT imaging findings, the calcified disc morphology of the responsible segment was classified (isolated, semilunar and continuous), and corresponding surgical techniques were adopted according to the classification. Comparison and analysis of 17 patients preoperative and 3 days, 6 months, 12 months, 24 months postoperative low back pain visual analog score（VAS） and Oswestry differences(ODI). At the last follow-up, the improved MacNab standard was used to evaluate the excellent and good rate of postoperative efficacy. [Results] All patients successfully completed PTED surgery without complications. The postoperative VAS score and Oswestry dysfunction index were significantly lower than those preoperative, and the difference was statistically significant (P<0.05). At the last follow-up, the postoperative efficacy was evaluated according to the modified MacNab standard. 11 cases were excellent, 4 cases were good, 1 case was fair, and 1 case was poor. The excellent and good rate was 88% (15/17). [Conclusion] According to the different types of calcified intervertebral discs, it is a safe and effective minimally invasive surgery to adopt corresponding surgical techniques to treat calcified lumbar disc herniation. Worth promoting.