If the knee feels like a tendon is not touching, it can be treated by conservative treatment and surgical treatment as follows: a. Conservative treatment: relaxing the knee joint by massaging the muscles and reducing the stress on the knee joint can relieve the local symptoms and restore the knee joint activity at the same time. Surgical treatment: If the cause is confirmed to be meniscal injury or intra-articular free body through MRI and physical examination, the free body can be removed through minimally invasive arthroscopic surgery and the meniscus can be sutured or trimmed to restore the function of the knee joint and relieve clinical symptoms. Through these methods, the clinical symptoms of the knee can be significantly relieved or even completely cured. In order to avoid recurrence of symptoms, we should strengthen the strength and intensity of the muscles around the knee joint, enhance the stability of the knee joint, and avoid trauma to the knee joint.