[Objective] To compare the clinical outcomes of meniscus repair versus meniscectomy for medial meniscus posterior root tears (MMPRT) by summarizing data from the published literatures. [Methods] The articles regarding comparison of meniscus repair with meniscectomy for MMPRT were retrieved from data bases, such as PubMed, Cochrane Library, Web of Science, CNKI, Wanfang Medical, and Weipu databases from the establishment to October 2020. After screening, data extraction, and quality evaluation were finished by two researchers, a meta-analysis was conducted by using Review Manager 5.4 software. [Results] A total of 6 papers were enrolled into this study, involving 263 patients, including 149 cases of meniscus repair and 114 cases of partial meniscectomy. As results of meta-analysis, meniscus repair proved significantly superior to the meniscectomy in terms of Lysholm score (MD=9.72, 95%CI 3.27-16.16, P=0.003) , IK- DC score (MD=11.91, 95%CI 1.21-22.61, P=0.03) , Kellgren -Lawrence grade (OR=0.09, 95%CI 0.04-0.21, P＜0.001) , and total knee ar- throplasty (OR=0.10, 95%CI 0.04-0.24, P＜0.001) . [Conclusion] For the treatment of MMPRT, meniscus repair is significantly better than the meniscectomy regarding to clinical scores and long-term prognosis in this study.