Pain above the knee may be caused by physiological factors such as inappropriate activities and long-term strain, or it may be caused by pathological reasons such as degenerative diseases and trauma of the knee joint. 1. Physiological factors: the top of the knee is generally the quadriceps tendon stop, patellar bursa and other soft tissues, improper activities may cause excessive tension of these soft tissues, resulting in sprains and strains of the soft tissues, etc. In addition, long-term mountaineering, athletes and other people, due to long-term wear and tear on the knee joint, which may result in aseptic inflammation of the soft tissues around the knee joint, resulting in pain symptoms. 2. Pathological causes: degenerative lesions in the knee joint lead to osteoarthritis of the knee joint, which may result in proliferation of synovial membrane, degeneration of cartilage, osteomalacia, etc., which may also lead to pain above the knee joint; trauma to the knee joint may directly injure the tissues around the knee joint, resulting in pain, such as extrusion injury of the knee joint, knee joint fall injury, etc.. There may be other reasons for the pain above the knee, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.