Spinal cord injury resulting in paralysis below the level of injury is called paraplegia. According to the level and degree of injury, it is classified as high, medium or low paraplegia; according to the degree of paralysis, it is classified as complete or incomplete paraplegia, which is characterized by dysfunction of motor function, sensory function, and urinary and fecal function. The clinical manifestations of different classifications focus on different aspects, and common causes include spinal cord, vascular lesions and trauma. Spinal cord injury is a neurological injury, recovery, treatment is more difficult, early need to lower the pressure, improve microcirculation and so on.