Riding generally does not hurt the knee. However, excessive or incorrect riding posture may damage the knee joint. Moderate cycling and correct riding posture will increase the strength of the leg muscles, improve blood circulation in the lower limbs, and the knee joints are subjected to less force, which is beneficial to the stability of the knee joints and the function of the muscles, and can play a role in exercising, which usually does not cause joint injuries. If the riding time is longer or the riding action is too strenuous (e.g., competition), the knee joint will be overloaded, which will easily lead to knee joint injury, causing knee synovitis, meniscus injury and articular cartilage wear and tear, etc., which can be manifested as obvious pain and activity disorder of the knee joint. Cycling has certain benefits to the knee joint, but should be moderate, to prevent discomfort in the knee joint affecting health. If discomfort occurs, consult a doctor in time.