Medial meniscus posterior root tear (MMPRT) is a radial tear or avulsion within one centimetre of the medial meniscus root point. When this type of injury occurs in the medial meniscus, there may be a meniscus extrusion and increased cartilage pressure, while the meniscus will lose its ability to convert axial pressure to circumferential pressure, resulting in rapid degeneration of the knee joint. However, accurately diagnosing injuries to the root of the medial meniscus presents certain challenges. To maximize the preservation of knee joint function, meniscus repair surgery should be preferred over traditional meniscectomy. There are primarily two repair approaches for suturing tears in the posterior root of the medial meniscus: transtibial pullout repair and anchor repair. Numerous reports have been published in domestic and international literature on the treatment of medial meniscus root injuries. However, there is still controversy over whether these methods can prevent or delay the onset of knee osteoarthritis. The article reviewed the progress in the diagnosis and treatment of MMPRT.