Lumbar small joint disorder syndrome is also known as small joint synovial imbrication. It is mostly due to acute lumbar sprain or bending and rising up, causing the synovial membrane to embed between the small joints, resulting in interlocking or dislocation of the small joints and limiting the movement of the spine. Patients tend to lie on their sides in flexion, with emotional tension and muscle tension, afraid to move for fear of being touched or moved by others. Any movement of the spine, coughing, or vibration will make the pain worse. Due to the pain, the lumbar muscles are in protective muscle spasm and the lumbar spine becomes flat or slightly posteriorly convex or slightly laterally convex. The disease is mainly characterized by lumbar pain, and the presence of radiating leg pain is less common. The cause of this disease is mostly due to the widening of the joint space on the side of the lumbar rotational movement or sudden turning or upright extension, which generates negative pressure and the synovial membrane is sucked into the joint, and the synovial membrane is caught between the joint surfaces when the lumbar is straightened. The synovial membrane of the joint has the distribution of the medial branch of the posterior nerve, so it can cause severe pain; small joint dislocation as age increases, the degeneration of the intervertebral disc gradually occurs, the synovial joint stability is affected, shear stress can be generated, which can cause small joint dislocation, or even subluxation; small joint degenerative arthritis long-term extension and flexion and lateral movement of the intervertebral loosening, the load per unit joint area increases, the articular cartilage and subchondral bone The treatment of lumbar small joint disorder syndrome in the acute stage is mainly bed rest, while oral pain relievers and antispasmodics can relieve and eliminate lumbar muscle spasm, reduce the pressure of the intervertebral joint, and promote the withdrawal of the embedded synovium. Tui-na manipulation can loosen the synovial imbedded membrane and restore the joint position to normal, which has the effect of relieving spasm and relieving pain. After the symptoms are relieved, bed rest, local physiotherapy, internal and external use of Chinese medicine should be used to consolidate the therapeutic effect; in the chronic period, strengthen the exercise of the lumbar and back muscles, pay attention to the protection of the lumbar region and the correct use of the lumbar force to prevent recurrence. If necessary, small joint capsule closure can be used to relieve pain and antispasmodic in the acute stage and analgesic and anti-inflammatory in the chronic stage.