The third lumbar transverse process syndrome is a series of clinical symptoms formed by the friction, pulling and compression stimulation of the third lumbar transverse process with the nearby soft tissues during the activity, and it occurs in young and strong manual workers. A. Etiology: The third lumbar transverse process syndrome is a common and frequent disease in clinical practice. The pathogenesis of this disease is related to anatomy, because the third lumbar transverse process is the longest, there are 8 muscle attachments, the end of which is subjected to the greatest muscle fascia tensile stress, due to its own local physiological anatomical characteristics and biomechanical dynamic equilibrium factors, it is very vulnerable to damage from various external factors, so when the lumbar flexion and extension activities, especially bad posture, the tip of the third lumbar transverse process is prone to friction, extrusion, stretching injury to the soft tissues around it, Therefore, when the lumbar region is flexed and stretched, especially in poor posture, the lumbar spine is prone to friction, extrusion and stretching of the soft tissues around the tip of the third lumbar vertebra, causing protective spasmodic pain of the lumbar back muscles and fascia. If not treated in time, local soft tissue mechanization, fibrous hyperplasia and inflammatory adhesions will occur, stimulating and compressing the adjacent microvascular bundles, causing pain in the lumbar hip. Diagnostic criteria: ① History of sudden bending and sprain, long-term chronic strain and cold in the lumbar region, mostly seen in young adults engaged in physical labor. ② Stiffness and pain of the lumbar muscles, aggravated in the morning, after exertion and cold, with difficulty in rising straight after sitting for a long time, sometimes radiating to the lower limbs to the knees. ③ Restricted functional activity of the lumbar vertebrae, especially obvious during anterior bending and posterior extension. ④ Significant pressure pain at the transverse process of the third lumbar vertebra, and nodules and cords can be palpated. ⑤ X-rays show straightening of the physiological curvature of the lumbar vertebrae and excessive length and hypertrophy of the transverse processes of the third lumbar vertebra. Treatment: The Department of Traditional Chinese Medicine and Orthopedics adopts pure Chinese medicine injection and internal treatment, which has little effect and significant effect.