Thigh muscle contraction pain may be caused by physiological factors such as aseptic inflammation or pathologic changes such as hip joint diseases. 1. Physiological factors: mainly including aseptic inflammation of the thigh muscles, muscle strains, etc. The thigh area is rich in muscle tissue, and prolonged heavy exercise training, sudden force, cold stimulation, etc., will easily cause an increase in anaerobic fermentation of the muscles, slight tearing of the fascia, poor blood circulation, and the accumulation of metabolites such as lactic acid, which will stimulate the nerve roots and give rise to pain symptoms. 2. Pathological changes: mainly including hip diseases, sciatica, lumbar diseases, such as acetabular impingement syndrome, pyriformis syndrome, lumbar intervertebral disc herniation, lumbar spondylolisthesis, lumbar spinal stenosis and other diseases, the pathological reasons will cause the abnormal activity of the hip joint area, the thigh muscles for a long time to compensate for the injury or due to the innervation of the thigh muscle parts of the nerves by the cardiac compression or irritation, the emergence of pain symptoms. Thigh muscle contraction pain alone can not accurately determine the cause, but also need to be combined with the characteristics of the medical history, other test results in order to make an accurate judgment, it is recommended that under the guidance of the doctor to clarify the cause and targeted treatment.