The first is the imaging of the meniscus, which is usually done by MRI of the knee. 2 degrees of injury is characterized by a high signal shadow on the meniscus, with visible cracks, but the cracks do not reach the joint surface of the knee. Second, the symptoms are mainly pain and unfavorable movement of the knee joint. If the degree 2 injury is more severe, there may be localized bleeding and significant swelling of the knee joint. It is important to keep the knee joint at rest and to apply external fixation with a cast or brace for about one month, and then remove the external fixation for functional exercises of knee flexion and extension. If there are no significant abnormalities in the flexion and extension joints, appropriate weight-bearing walking on the ground can be considered, and the exercise process should be increased gradually. If the symptoms are obvious, you can take oral anti-inflammatory and pain relief, blood circulation and blood stasis and other related drugs can effectively reduce the symptoms.