The symptoms of pain after traction for lumbar disc herniation may be caused by the traction itself, such as too much traction force or too long traction time, or it may be caused by the nerve being stimulated again during the traction process. 1. The reason of traction itself: traction therapy is one of the conventional treatments for lumbar disc herniation, and most of the patients will not experience pain after traction. A small number of patients may experience pain due to too much traction force or too much traction time, which exceeds the tolerance range of the lumbar muscles, resulting in acute strains of the lumbar muscles. 2. Nerve stimulation: under normal circumstances, the process of traction therapy, the vertebral body gap will be widened, the compression of nerve tissue will have a certain degree of reduction. A small portion of the population due to the nerve compression for a long time or nerve sensitivity and other reasons, in the process of traction, there may be nerve irritation, may also appear after traction, pain symptoms. Lumbar disc herniation pain after traction, there may also be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.