In acute meniscal injuries with intra-articular blood accumulation, muscle spasm interferes with physical examination and makes clinical diagnosis more difficult, so arthroscopic examination of the knee should be actively performed to determine whether there is concurrent damage to other tissues and structures to avoid misdiagnosis and omission. If there are no significant pathologic changes, conservative treatment is indicated to protect the torn tissue, reduce pain and swelling, and restore muscle tone and joint range of motion. After the injury, braking and icing of the knee should be performed, and 3 days after the injury, knee rehabilitation physiotherapy should be performed to gradually restore muscle strength and joint exercise and ambulation. At 6 weeks post-injury, if there are no signs and symptoms, full ambulation can be resumed; if there are signs of meniscal damage, knee arthroscopy should be performed. Patients who have not been effectively treated for acute meniscal injuries and patients with chronic injuries should also undergo knee arthroscopy if signs and symptoms of meniscal tears are present on clinical examination. ① The meniscus is a tear in the blood supply rich area; ② The tear should not exceed 2 cm in length; ③ The knee should be splinted to restrict movement for 6 weeks; ④ Rehabilitation should be performed according to the meniscal suture. ⑤ Acute injury. If the injury is still showing signs of meniscus damage for more than 3 weeks, it indicates that the likelihood of your meniscus healing on its own is slim. In addition, many people, although they choose conservative treatment, do not restrict their activities or even wear a straight splint.