The first thing to do is to identify the cause of the creaking and pain when bending the knee, and then target physical therapy, medication, surgical treatment, and if the symptoms persist, timely medical attention is needed. The causes of creaking and pain when bending the knee include ligament injury, meniscus tear, osteoarthritis, etc. It is recommended to find out the cause of the disease before treatment, and target treatment. 1. Ligament injury: If ligament injury occurs, the ability to fix the knee cartilage is weakened, there will be a ringing and pain when bending, acute injury can be iced, the injury is not serious can be taken as a conservative treatment, pressurized bandage, pay attention to rest, the injury is serious and need to be timely surgical repair. 2. Meniscus tear: you can take non-steroidal anti-inflammatory drugs ibuprofen for anti-inflammatory pain, use glucosamine sulfate to promote the repair of cartilage matrix, meniscectomy if necessary, please follow the doctor’s instructions. 3. Osteoarthritis: you can take celecoxib and other drugs under the guidance of the doctor to relieve pain, severe symptoms can be injected into the joint glucocorticoids to lubricate the joints, relieve pain, if necessary, joint replacement or joint fusion surgery. Causes of knee creaking and pain when bending more causes, in addition to the above diseases, may also be associated with osteophytes, chondromalacia patella, gouty arthritis and other diseases, if the pain persists, it is recommended to go to the hospital in a timely manner for examination, by the doctor targeted treatment.