Bone ringing when walking may be caused by the following reasons: 1. there may be corresponding joint injury, such patients may have damage to the meniscus, cartilage, ligaments and other parts of the joint, which may cause abnormal friction during walking, and then produce ringing around the bones. 2. it may be caused by tendon-related pathologies, such as contracture of the tendon or inflammation of the tendon. 3, such patients may have free body inside the joint, the so-called joint free body refers to the internal debris of the joint, over time, the production of abnormal calcium salt deposits, and then produce free material like pearls, such free material in the process of walking, the patient may produce in the joint 4, may be due to old injury, for example, if the patient has an old fracture in the lower limb, and there is a relatively small fracture block, in the process of walking may appear around the fracture block ringing.