Knee cartilage wear and tear is difficult to reverse with current technology, and can only be slowed down through a series of methods to control the associated symptoms. It can be categorized into conservative and surgical treatments. For superficial cartilage wear with a surface less than 1 cm, conservative treatment can be adopted, including rest, avoiding strenuous exercise, physical therapy, wearing a brace, etc., supplemented by non-steroidal anti-inflammatory drugs such as celecoxib. Intra-articular sodium hyaluronate injections have a protective effect on the cartilage and can prevent further damage. Surgery should be considered for severe injuries that have failed conservative treatment or for patients who have developed intra-articular free bodies in the knee joint. Depending on the condition of the patient, surgery can be performed to clean the joint cavity, bone marrow stimulation, autologous or allogeneic cartilage transplantation, and articular surface replacement. Patients with knee cartilage abrasion are advised to go to the hospital as soon as possible and ask the professional doctor to evaluate the severity of the condition and then choose the appropriate treatment. The above medications should be used under the guidance of a doctor, avoid self-medication.