Abstract:Abstract: Objective?To analyze the clinical effect of percutaneous endoscopic transforaminal discectomy (PETD) and percutaneous endoscopic interlaminar discectomy (PEID) in the treatment of lumbar disc herniation.?Methods?PubMed, Embase, Cochrane Library, CNKI, WANFANG and VIP were searched by computer to collect the articles about PETD and PEID in the treatment of disc herniation up to January 2018. The articles were included according to the standard and two authors reviewed all articles individually. All articles were evaluated by the modified Newcastle-Ottawa scale, and after data extraction, RevMan 5.3 was used to perform a Meta-analysis.?Results?Finally, 18 articles with 1?149 patients were included in this Meta-analysis, with 597 patients in PETD group and 552 patients in PEID group. The operation time was shorter in PEID group (P?0.05), the X-ray irradiation time was fewer in PEID group (P?0.05), the complications were fewer in PETD group (P?0.05). However, the comparisons of VAS after 1?d, VAS after 3?m, VAS after 6?m, VAS after 1?y, the comparisons of ODI after 1?d, ODI after 3?m, ODI after 1?y, excellent and good outcomes rate and recurrence or residual showed no significant differences between the two groups (P?>?0.05).?Conclusion?Both PETD and PEID are effective and similar in the treatment of lumbar disc herniation. These two approaches have its’ advantages and disadvantages respectively. There are different and overlap indications. Therefore, it is necessary to select a proper approach according to the clinical situation.