There are two crescent-shaped cartilage structures in the knee joint called meniscus, which is an important structure for functional movement of the knee joint. A large number of basic and clinical studies have confirmed that the meniscus has important functions such as absorbing shock, expanding the stress area of the joint to bear load, promoting synovial fluid circulation and nutrition to maintain joint stability. Knee meniscal injuries are the most common injuries that occur in traffic accidents, field work, daily physical exercise and other activities. The main symptoms are: pain, fluid accumulation, tender leg, and joint strangulation in the affected knee, thus causing great inconvenience to daily life. Arthroscopic knee meniscus surgery is currently the preferred surgical method. It is a minimally invasive procedure that can not only clarify the diagnosis and correct clinical errors, but also determine the extent and nature of the ruptured meniscus and determine the surgical approach. It also allows for the management of synovial and cartilage lesions secondary to intra-articular meniscal injury and excessive secondary lesions. Arthroscopic meniscal surgery is classified according to the extent of injury: meniscal suture, partial meniscectomy, subtotal meniscectomy, and total meniscectomy. However, because of the importance of meniscal structures in the knee joint, meniscal repair sutures play an important role in preserving the function of the meniscus and are currently the main surgical method promoted at home and abroad.