Urinary and fecal incontinence caused by lumbar disc herniation is gradual, with pain and numbness in the saddle area in the early stage, followed by decreased sensation or loss of sensation in the saddle area, and urinary and fecal incontinence in the later stage due to the progression of the disease. 1. Abnormal manifestations in the saddle region: numbness and pain in the saddle region in the early stage, accompanied by sphincter dysfunction, constipation in the early stage, but no urinary and fecal incontinence. 2. Sensory abnormality and muscle dyskinesia in the region innervated by the cauda equina. 3. As the disease progresses, it will develop into incontinence and impotence in male patients. Herniated lumbar discs cause cauda equina abnormality, need to be combined with imaging examination, early treatment, control the progress of the disease is very important.