Lumbar intervertebral disc is located between two vertebrae, lack of rich blood circulation, poor repair ability, especially the lower lumbar vertebrae are subjected to large force, large range of motion, easy to be damaged and degeneration, resulting in disc herniation. Its clinical manifestations are as follows: 1, morbidity: most common in patients aged 20-50 years old, accounting for about 80%, male to female ratio of about 8:1, about one-third of the patients have a history of trauma, more than half of the patients are manual laborers, and a part of the patients have a history of sedentary, standing for a long time. 2, low back pain: most patients have trauma, cold or overexertion induced low back pain dull pain, pain relief after rest, recurrent episodes, weeks or months gradually feel a side of the lower limbs. There is also a part of the patient sudden onset of severe pain in the lower back and legs, intolerable, most of this part of the patient has a clear history of trauma. 3, radiating radicular pain: the patient has a side of the lower limbs of the radiating pain, that is, often referred to as sciatica. Its onset in the lumbar pain, there are also lower extremity radiating pain in the first and lumbar pain in the back. Lower extremity pain, mostly unilateral, starting from the lower back, buttocks, and gradually radiating down to the thigh calf and foot, the pain site and nature of the compression of the nerve, the site of compression, the degree of compression varies. Coughing, sneezing and other causes of a sudden increase in intravertebral pressure can induce an increase in pain, which can be alleviated by bending the hip, knee, or lying on the side. It is common to see coldness, numbness and coldness on the affected side of the limbs, which should be differentiated from vascular diseases of the lower extremities. 4, lower limb sensory impairment: one side of the lower limb numbness like ants, the pressure innervation area of superficial sensation, pain, temperature sensation is retarded. 5, lower limb muscle atrophy: the longer the disease, the nerve root compression is serious, often found in the painful limbs become thin and weak, that is, muscle atrophy. 6, intermittent claudication: when the patient walks, with walking distance increases, causing low back pain and pain and numbness of the affected limbs aggravated, when taking a squatting position or lying down after the gradual disappearance of the symptoms can be again walking tens of meters to hundreds of meters, that is, intermittent claudication. It is mostly seen in patients with lumbar intervertebral disc herniation and spinal stenosis, and also seen in patients with multi-segment intervertebral disc herniation. 7, double lower extremity symptoms: lumbar disc herniation is usually one side of the lower extremity symptoms, a few patients can see double lower extremity symptoms, mostly one side of the side of the heavy, one side of the light, mostly in the central type of intervertebral disc herniation is larger.