The exercise of lumbar back muscles in patients with lumbar disc herniation is mainly the exercise of posterior extension of the spine, including the supine position for the arch bridge, three (five) points of support and prone position for the posterior extension of the head and chest method, the swallow point water type and other methods. The exercise of the abdominal muscles is mainly for the exercise of the forward-flexed spine, including supine sit-ups, arched bridge and other similar exercise methods. Five-point support arch bridge pose; hip and lower limb muscle exercise including lunge leg press, leg lift performed in the prone position; leg press; unilateral leg press; 30 ° leg lift; 60 ° leg lift. The role of functional exercise 1, stabilization and protection of the lumbar spine, lumbar disc protrusion destroyed the intrinsic stability of the lumbar spine, lumbar pain and limited activity and wearing a waist circumference can also make the lumbar muscles atrophy and reduce the extrinsic stability of the lumbar spine. Through functional exercise, the lumbar and abdominal muscle strength and muscle endurance can be increased to strengthen the external stability of the lumbar spine, forming a strong muscular lumbar circumference around the lumbar spine, which has a direct protective effect on the lumbar spine; in addition, abdominal muscle contraction can increase intra-abdominal pressure, thus forming a cylindrical muscular cavity tube, which conducts part of the gravity and reduces the load on the lumbar spine. 2, relieve muscle tension spasm, reduce pain, reduce the load on the lumbar spine lumbar intrinsic stability factors. Injury of the vertebral disc. Can cause extrinsic stability factor lumbar back muscle function compensatory enhancement, expressed as muscle tension spasm; In addition, the protrusion of back pain, can cause self pain protective muscle tension spasm. The muscle tension spasm can aggravate the pain and also increase the load of lumbar spine which is not conducive to the retraction of the protrusion and the repair of the injury. Reasonable muscle relaxation exercise can relieve muscle tension spasm, reduce pain, and reduce the load on the lumbar spine. At the same time, its mental relaxation effect can affect the mechanism of endogenous morphine-like substance conduction and pain inhibition. 3.Improve local blood circulation, reduce the accumulation of inflammatory pain-causing substances and metabolites, and accelerate injury repair. Injury can cause an increase in the concentration of local inflammatory pain-causing substances such as histamine, bradykinin and prostaglandin; muscle spasm and ischemia can cause the accumulation of metabolites, which can aggravate pain and is not conducive to injury repair. Functional exercise can accelerate blood circulation, and a large amount of blood flow to the muscle. Blood flow is obviously redistributed, which helps to dilute the concentration of pain-causing substances and take away pain-causing substances, accelerate the excretion of metabolites, and promote the absorption of local swelling and the recovery of neuromuscular activity. Some data show that functional exercise can significantly increase the expansion of capillary network in the muscle. 4, prevention and relief of nerve root and dural adhesions. Nerve root compression and local aseptic inflammatory reaction to lumbar disc herniation can form nerve root and even dural adhesions in the later stages. Adhesions and scarring are also common in the exposed portion of the dura mater after surgical treatment to remove the nerve roots and laminae of the disc site. Reasonable functional exercise can make the nerve roots and dura mater have proper passive up and down movement, thus preventing or relieving the nerve roots and dural adhesions and reducing or eliminating the pain caused by them. 5. In order to alleviate the pain and escape from the compression, self-protective deformities such as lumbar scoliosis, shallow physiological curvature of the lumbar spine and posterior arch are formed, thus destroying the balance of the lumbar spine and affecting the function of the lumbar spine. 6, the lumbar spine protective posture maintenance, need part of the lumbar back muscle function compensatory enhancement, that is, muscle tension spasm, a long period of muscle tension spasm and will aggravate the lumbar spine deformity. Muscle relaxation exercises can relieve muscle tension spasm and reduce lumbar spine deformity; exercises to improve joint function can improve the mobility of the lumbar spine and correct lumbar spine deformity.