Calcification of the knee is a phenomenon of bone aging caused by the deposition of calcium salts in the knee joint. Generally speaking, patients can reduce the symptoms by reducing daily activities, applying warm compresses and other conservative treatments, and if necessary, surgical treatments can be taken. 1. Conservative treatment: the cause of knee calcification is mainly osteophytes or calcium salt deposition caused by long-term strain on the knee. Patients with this condition should reduce the weight-bearing activities of the knee joint, pay attention to balanced nutrition in the daily diet, and can use leg lifting exercises under the guidance of a physician to exercise muscle strength. It can be treated by hot compresses, medium and low frequency electrotherapy, microwave therapy and so on. 2. Surgical treatment: If the patient’s knee calcification is serious, the bone proliferation is too much, which enhances the stimulation of the joint and the surrounding soft tissues, causing osteoarthritis and other diseases. Further treatment should be taken when knee pain and activity limitation occur. Generally speaking, medication is not ideal for degenerative changes in the knee, and patients can be treated with surgery such as artificial knee replacement. Patients should pay attention to the maintenance of the knee in daily life, and go to the hospital for timely treatment if discomfort occurs.