The hip arthroscopy develops quickly in the past 20 years. Its use in the diagnosis and treatment of the hip injury get more notably. Many of pathologic conditions previously unrecognized through X-ray, CT or MRI have been diagnosed correctly under hip arthroscopy. The technology has become gradually a golden standard to confirm the hip discords. In the present, the examining path of the hip arthroscopy contains mainly the outside path, the anterior path, the outside-posterior path. The application range of the hip arthroscopy includes the management of labral tears, the femoroacetabular impingement, the ligamentum tear injuries, the chondral lesions, the synovical abnormalities, the intra-articular infection, the loose bodies in the joint etc. The hip arthroscopy is a comprehensive technology. Its superiority can be reflect well if the doctors are familiar with the indication, the contraindication and the operation procedure. And also the thorough physical examination and imaging examination should be made before operation, as well as reasonable and effective postoperative function training should be conducted.