The meniscus is an important tissue structure inside the knee joint. We know that the knee joint is a very important weight-bearing structure in the human body, its mobility is very large, and it is also very easy to be damaged, and with the gradual aging of the body, there will be cartilage dehydration, cartilage metamorphosis damage. Generally the peripheral meniscus has a blood supply and has some ability to repair after injury, but the meniscus near the center has a poor blood supply and is difficult to repair after injury. For minor meniscus injuries, when the patient’s symptoms are not very serious, the patient can rest on his own and reduce the strenuous activities of the knee, such as climbing stairs, jumping, and other strenuous activities that may damage the meniscus of the knee. When the knee meniscus injury is very serious, for example, there is a fracture, the damage has reached a certain level, arthroscopic treatment can be carried out, the damaged meniscus can be removed.