Walking more knee pain may have the following causes: first, degenerative osteoarthritis of the knee joint, as the knee joint degenerates with age, there will be damage to the cartilage of the knee joint, if walking long distances, there will be obvious pain in the knee. Second, patellofemoral arthritis, there is a patellofemoral joint between the knee joint, patella and femur, after walking more, there will be damage to the knee joint, patellofemoral joint, which results in significant pain at the knee, then X-rays or nuclear magnetic examination should be performed to further confirm the diagnosis and treatment. Thirdly, a relatively rare cause is hip joint disease, such as femoral head necrosis or synovitis of the hip joint, which can also reflexively cause knee pain after walking too much. There may not be any positive signs during the knee X-ray examination, but hip joint diseases may be found during the hip X-ray or CT.