Hip pain, the common causes are as follows: 1, pyriformis syndrome, when sedentary and cold stimulation, it will squeeze the sciatic nerve through the buttock pain, can also appear lower leg pain. Treatment is physical therapy, heat treatment, pain is obvious when oral non-steroidal drugs, such as fenbid, meloxicam, etc. 2, lumbar disc herniation, mainly after the rupture of the intervertebral disc annulus fibrosus nucleus pulposus protrudes, stimulation or compression of the local nerve root after the emergence of lumbar and leg pain. At the initial onset, conservative treatment such as absolute bed rest, repeated episodes require surgical treatment. 3, ischemic necrosis of the femoral head, mainly due to local trauma or long-term alcoholism, oral hormones and other reasons. Hip pain can occur, and the pain is aggravated after weight bearing, and local X-ray examination is needed to confirm the diagnosis.