Conservative treatment: mainly rest, local physical therapy, closure, oral non-steroidal anti-inflammatory and analgesic drugs, and strengthening functional exercise of the quadriceps muscle can reduce the inflammatory response, improve the symptoms, and slow down the pathological changes of the synovial membrane, but cannot remove the source of the disease, and once the trigger reappears, the patient’s symptoms and signs will reappear and worsen. Surgical treatment: Patients who take conservative treatment is ineffective should promptly choose to undergo surgical treatment and arthroscopic removal of the pathological state of the crepitus. Especially those folds with inflammatory changes, hypertrophy, fibrosis and loss of elasticity, which have obvious clinical symptoms, often achieve ideal results after arthroscopic surgical excision. Timely removal of pathologic folds prevents secondary damage to other structures in the knee joint, especially the articular cartilage. When removing the crease, its full length should be removed from its attachment so that it is completely removed; if it is only cut from the middle, the crease may heal on its own and become symptomatic again.