Generally speaking, most patients who are young and strong and have sudden onset of low back pain with sciatica are likely to have lumbar disc herniation. However, if the onset of lumbar pain is slow and the symptoms continue to worsen gradually, attention should be paid to identify other lumbar diseases. Some of the most common low back pain diseases are as follows: 1. Lumbar spine tuberculosis: there is often a longer period of low back pain, accompanied by loss of appetite, emaciation and fatigue, low fever in the afternoon, night sweats and other systemic symptoms. If sciatica is present, its onset is slow and persistent. The diagnosis can be confirmed by MRI or visible destruction of vertebral body, abscess or flow injection formation in the lumbar muscle. 2, cauda equina neuroma: the symptoms are often based on neuralgia, the pain is persistent, almost no change in severity, but slowly becomes more and more powerful, bed rest is aggravated, especially at night. Initially, the symptoms are limited to a certain nerve root area, but as the tumor grows and compresses the cauda equina nerve, lower limb paralysis and urinary and fecal incontinence occur. Myelogram can confirm the diagnosis. 3.Sciatica and spondylolisthesis: chronic recurrent low back pain, bending with difficulty, or sudden low back pain when moving, the pain often radiates to the two buttocks and the back of the thighs and below the knees. The diagnosis can be determined by X-ray bilateral oblique films of the lumbar spine, front and side films, and power films. 4, lumbar spinal stenosis: lumbar and leg pain, aggravated by walking, or dropping of the waist and hip when standing and walking, gradually developing calf pain, weakness and numbness when walking, which is relieved after rest. Further walking and pain is called intermittent claudication. Low back pain often presents as bilateral asymmetric reflex pain, both sciatica and femoral neuralgia. Myelogram, CT and MRI examinations help to make a clear diagnosis. 5, lumbar spine osteoarthropathy: chronic pain in the low back, prolonged disease can be accompanied by sciatica, the onset of older. Lumbar spine X-ray, CT and MRI can help confirm the diagnosis. In addition, ankylosing spondylitis, lumbar spine metastatic cancer and osteomyelitis should also be thought to, but all have their own characteristics.