Knee pain on stairs can be caused by synovitis, osteoarthritis, chondromalacia of the patella and soft tissue injuries, etc. General treatment, physical therapy, medication and surgery are feasible. 1. Synovitis: Synovitis caused by strenuous exercise or cold can cause pain when going up the stairs. You should pay attention to rest, pay attention to local warmth, can follow the doctor’s instructions oral ibuprofen and other analgesic drugs, if synovitis caused by a large amount of joint effusion also need to carry out joint cavity puncture treatment. 2. Osteoarthritis: Osteoarthritis of the knee joint, which often occurs in elderly patients, can be caused by bending of the knee when going up the stairs, resulting in increased local pressure and causing pain symptoms. It is necessary to reduce knee activities, wear knee pads to protect knee joints, massage and hot compresses and other treatments, but also under the guidance of the doctor to the joint cavity injection of sodium hyaluronate and other drugs to nutrition and lubrication of articular cartilage, and in severe cases, surgical treatment is feasible. 3. Chondromalacia patella: Chondromalacia patella is common in patellar injury or long-term strenuous exercise, can be on the stairs when the pain symptoms. It needs more bed rest, and can be treated with anti-inflammatory and analgesic drugs such as ibuprofen as prescribed by the doctor, and in serious cases, it needs to be treated with surgery. 4. Soft tissue injury: ligament and meniscus injury in knee joint caused by trauma or strain injury can cause pain when going up the stairs. It is necessary to carry out local braking, avoid activities, conservative treatment is ineffective surgical resection or repair of damaged tissues. When stairs knee pain should be timely medical consultation, under the guidance of specialized doctors to actively carry out appropriate treatment, help early relief of pain and other uncomfortable symptoms.