For knee pain downhill, it is important to rule out whether it is caused by a high level of recent activity. If there has been a lot of recent exercise, it is important to take care to relieve it during the period, pay attention to rest, and reduce the weight on the knee joint. Many older adults have more pronounced knee pain when going up or down hills, most of which is directly related to inflammation and hyperplasia of the knee joint. Because the weight of the knee joint is three times the weight of the human body during climbing movements, knee pain is especially noticeable when climbing or descending. In this case, if you have inflammation or hyperplasia of the knee joint, you must not climb or descend the mountain again, as this kind of exercise is very serious for the wear and tear of the knee joint. In addition, you can take oral medication to nourish the cartilage, such as glucosamine sulfate, and if the pain is severe, take oral ibuprofen to reduce inflammation and pain.