Thigh a burst of neuralgia, the specific causes are as follows: First, lumbar intervertebral disc herniation compression of the nerve, intermittent thigh pain, exertion or weight-bearing after obvious, lumbar spine imaging can be a clear diagnosis of the treatment of local physiotherapy, oral nutritional nerve and calcium treatment, if necessary, feasible surgical treatment. The main manifestation of ischemic necrosis of femoral head is intermittent sloping, leg pain, aggravated after exertion. Hip joint radiographs, CT or nuclear magnetic can be clearly diagnosed, with conservative treatment to reduce symptoms, if necessary, surgery to replace the femoral head. Calcium deficiency is also easy to cause paroxysmal pain in the thigh, mostly after exertion or cold. Episodes can be irregular, blood calcium monitoring can assist in the diagnosis, oral or intravenous calcium supplementation therapy. Fourth, trauma, strenuous exercise, lower extremity venous thrombosis and other diseases can also be caused. Therefore, when the above symptoms occur, attention should be paid to further define the cause of the disease, combined with the patient’s symptoms, signs and auxiliary examination, a clear diagnosis and then give treatment, to avoid misdiagnosis and delay the condition.