The stiffness of the lumbar muscles is mostly due to the following reasons: First, muscle strain, which is mainly caused by excessive muscle strain, causing muscle cell edema and reduced muscle fiber relaxation, thus causing the symptoms of stiffness in the lumbar muscles. Second, after the trauma treatment is not complete, not completely recovered, this situation will make the muscle in a long-term semi-edema state, will also lead to muscle parts have obvious stiffness, in the activity will appear sore symptoms. Third, in patients with lumbar degeneration, osteophytes and herniated discs, this condition can easily lead to the lumbar muscles being stimulated by the enlarged bone and the herniated discs compressing the nerves, causing the lumbar muscles to lose innervation and causing spasm, which can lead to significant stiffness in the lumbar muscles.