When walking on cobblestone pavement, the uneven pavement changes the direction of power transmission when passing through the foot, which is easy to cause damage to the foot and knee joint. Walking on this bumpy road for a long time will wear out articular cartilage. In fact, cobblestone roads lead to swelling of the knee joint, and even aggravate the original knee joint condition. Therefore, people with knee joint diseases should try to avoid this kind of exercise. Walking the cobblestone road does have a certain health care function. People who make cobblestone roads don't understand medicine, and some pebbles they choose may be too sharp and too stimulating, which is not good for their health. Except for patients with knee joint diseases, it is best not to take cobblestone roads for people with the following diseases: foot pain, sprain, trauma and swelling; Chronic diseases such as coronary heart disease, hypertension, liver and renal insufficiency are aggravated; People with balance disorders such as dizziness.