There are many reasons why joints rattle when you move, the common ones are degeneration of articular cartilage, physiological rattling, congenital ligament laxity and so on. 1. Degeneration of articular cartilage: If the patient is overworked for a long time, it will lead to degeneration of articular cartilage and decrease of joint lubrication, which will lead to bone rubbing phenomenon when the articular cartilage is active, and the symptom of ringing when the joints are moved will occur. 2. Physiological rattling: if the patient does not exercise for a long time or keep the same position for too long, rattling occurs when moving, which belongs to physiological rattling, if there is no pain and other abnormal symptoms, there is no need for special treatment, pay attention to the exercise can be. 3. Congenital ligamentous laxity: congenital ligamentous laxity is a congenital developmental abnormality, patients with multiple parts of ligamentous laxity, which can easily lead to degeneration of the joints, and the joints are prone to popping when they are moving, which may lead to pain. If the patient has the symptom of ringing when the joints move, and if it is combined with discomfort, it is recommended to consult a doctor in time to determine the cause of the disease and receive regular treatment as soon as possible.