The hips are usually referred to as the area where the hip joint meets the trunk and lower extremities of the body. Hip usually refers to the hip joint, in terms of anatomy, mainly consists of the acetabulum and femoral head, belongs to the ball and socket joint, is located in the body of the trunk and lower limbs junction of the part. In daily activities the hip joint is more weight-bearing and has a higher degree of mobility. The hip joint is a relatively tight joint, surrounded by more developed ligaments and cartilage cover, can help the human body to improve the flexibility of activities, participate in and help to complete the body running, jumping and other movements, but also easy to be injured in strenuous activities. After the human hip joint is damaged, it will often cause hip arthritis, necrosis of the femoral head and so on, which will produce different degrees of pain, and will also make it difficult for the body to make the movement of stilts, as well as hip rotation, flexion and other movements, resulting in the restriction of daily activities, and may even affect the normal walking. It is necessary to seek medical treatment in time, and if necessary, hip joint replacement surgery to improve the situation. In the usual exercise process, should avoid hip overload activities, obese or overweight people should also be reasonable to do a good job of weight reduction program, to avoid overload of the lower limbs, to protect the hip joint.