Patients with both sides of the hip bone acid, may be related to the following conditions: First, the synovitis of the hip joint: often sports, weight-bearing walking, such as going up and down the stairs, mountaineering, hiking, or walking with a heavy backpack, walking with a burden, doing farm work, are prone to cause increased weight-bearing and load on both hip joints, which can easily cause synovial irritation, aseptic inflammation and synovitis, which is manifested as the pain of the hip joints on both sides, discomfort. Secondly, necrosis of femoral head: it is mostly due to long time loading, large amount of drinking, smoking, and long time use of hormones, which can easily cause the blood supply of femoral head to be damaged, and chronic pain in the deep part of both hip joints can occur. This kind of pain will be very obvious during weight-bearing activities, and gradually there will be limitation of joint function.