Joints are important connecting structures in the human body, whose main role is movement and also weight-bearing. The structures that make up the joints include cartilage, menisci, ligaments and other soft tissue structures in addition to bony structures, which determine the stability of the joints, but also lead to their vulnerability to damage. There are three indicators to judge a good joint: no pain, good stability, and good movement. If any one or two or three of the three are abnormal, then the joint is abnormal or there is joint disease. Joint disease is very prevalent in the national population and is also prone to early onset, the most common being degenerative osteoarthritis. According to research, the national population is physically susceptible to inversion of the knee, and the incidence of rotundity is higher than in Western populations. On the other hand, some lifestyles of the national population, such as squatting in the toilet, which requires deep squatting movements, can also increase the burden on the knee joint. Since the joints are used very frequently and the articular cartilage starts to degenerate from the age of 30, the cartilage becomes less water-content, more brittle, less viscoelastic, and less resistant to wear and tear, so it is more susceptible to injury and degeneration. It is easier to understand the joint lesions due to trauma, and all such factors can lead to joint disease. The following points need to be noted to prevent early diagnosis and treatment: Emphasize self-examination and early diagnosis and treatment. Starting from middle age, or even from youth, joint cartilage begins to degenerate. People should have a string in their heart and always be alert to joint pathology. If you have been sitting for a long time and suddenly have difficulty getting up and taking steps, then you can walk after a while, but the pain is relieved when you sit down and rest, you should be alert to cartilage lesions. Pain is the earliest and most important symptom of joint disease; if there is repeated knee swelling, pain, pain going up and down stairs, or even joint pain after cold and damp, you should pay attention to these initial signs and seek professional consultation and treatment. Proper weight loss and combination of exercise and nutrition. Obesity often increases the burden on the joints and accelerates the wear and tear of the cartilage surfaces of the joints. The AAOS recommends that for patients with symptomatic osteoarthritis, they should lose weight if their body mass index (BMI) exceeds 25. In case of joint lesions, it is important to combine exercise with rest and exercise to reduce the wear and tear of the cartilage. Swimming and walking are the best ways to exercise without increasing the weight on the joints, but also to exercise the muscles and ligaments around the joints. Swimming also has a health effect on the spine. Walking is the most economical, safest, and most suitable for long-term adherence. Arthritis patients should not walk at a large pace or at a fast speed, otherwise it is likely to increase joint wear. In addition, in the morning and evening, you can lie on your back in bed and repeat the straight leg raise while flexing the ankle to exercise the quadriceps muscle strength and increase the protection of the knee joint. Avoid trauma and live reasonably. Trauma can cause damage to joint cartilage, meniscus and ligaments, which can lead to joint instability, synovitis and joint degeneration. Patients with joint lesions should not perform activities that increase the load on the joints, such as long squatting stance, squatting up and down, stairs, climbing, etc., to slow down the wear and tear of the joints. You should also pay attention to prevent your joints from getting wet and cold, and keep them warm; wear knee pads if necessary to prevent your knee joints from getting cold. In addition, do not wear high heels for a long time; it is better to wear shoes with loose, elastic soles to absorb shock and reduce the impact on the joints. Appropriate physiotherapy and symptomatic treatment. Physiotherapy can promote blood circulation, local pathological metabolites absorption, produce anti-inflammatory, swelling, pain relief. It is important to pay attention to the reasonable timing of physical therapy. For joints that are swollen and painful in the acute stage, heat-producing physical therapy devices cannot be used, nor can hot compresses be applied, otherwise the blood vessels and synovial membranes will further expand when exposed to heat, secreting more joint fluid and aggravating joint swelling; while when in the non-acute stage, such as old cold leg, there is no obvious redness, swelling and joint fluid, hot compresses or heat-producing physical therapy devices can be used to promote inflammatory absorption. For symptomatic degenerative joint disease, symptomatic treatment can be appropriate, there should be NSAIDs drugs and tramadol-like drugs for pain relief, and drugs that supplement cartilage components, such as glucosamine drugs, can be taken. In conclusion, early arthropathies with symptomatic adjuvant therapy can relieve symptoms, improve function, and delay the course of the disease. For joint disease, both the patient and the doctor must share the same “knee care” and fate, delaying the life of their own joints and delaying joint replacement as long as possible.