The general common causes of back stiffness and hair plate are mainly the following conditions. First, lumbar muscle strain is mostly seen in elderly patients who have been engaged in heavy physical labor for a long time. Due to the muscle injury of the lumbar back, patients can have symptoms such as stiffness of the lumbar back and restricted activities. It is possible to improve the blood circulation of the lumbar back and reduce the symptoms of stiffness through adequate rest, massage physiotherapy of the lumbar back muscles, external application of hot ointment pack, fumigation with moxibustion strips, external application of blood-activating and stasis-transforming cream, and instructing patients to properly exercise the muscles of the lumbar back. Second, patients with herniated lumbar discs often have restricted activities due to the protruding lumbar discs compressing the spinal nerve, resulting in the symptoms of stiffness of the back. You can improve the magnetic resonance or CT examination of the lumbar spine to clarify the compressed nerve, and then consider surgery to release the nerve compression, thus reducing the symptoms of restricted movement of the lumbar back and stiffness of the back hair plate.