Knee pain on stairs may be caused by synovitis, chondromalacia patella, osteoarthritis and other diseases, which can be relieved by medication and surgery. 1. Synovitis: If the knee pain on stairs is caused by synovitis, the patient can follow the doctor’s instructions to inject sodium vitrate and other drugs into the joint cavity, which has the effect of anti-infection and repair, and can also effectively relieve the pain. Surgery can also be used to remove exudates and deposits from the joint. 2. Chondromalacia patellae: Chondromalacia patellae can also lead to knee pain on stairs, patients can take aspirin, ibuprofen and other non-steroidal anti-inflammatory drugs as prescribed by the doctor, which can relieve swelling and pain. Patients can also remove the diseased cartilage through chondroplasty and drilling, release the intraosseous pressure and relieve pain. 3. Osteoarthritis: knee pain on stairs may also be caused by osteoarthritis, patients can follow the doctor’s instructions for external use of non-steroidal anti-inflammatory drugs such as flurbiprofen gel paste, with anti-inflammatory, analgesic effect. Artificial joint replacement surgery can also be used to eliminate joint pain. There are many reasons for knee pain on stairs, so it is recommended that you go to a regular hospital and cooperate with your doctor for standardized treatment.