Cerebral palsy is a motor and postural abnormality caused by injury to the immature central nervous system during gestation, at birth, and 4 weeks after birth, often accompanied by impairment of intelligence, movement, and sensation. While central nervous system lesions are stationary, secondary lesions of the skeletal muscular system are non-stationary and progressively worsen with growth and development. Without early scientific and systematic intervention and early implementation of orthopedic surgical treatment, limb deformities and dysfunction may progress to very severe levels in many patients. Cerebral palsy often results in an excessive spinal twitch reflex, which leads to a state of bilateral lower or/and bilateral upper extremity spasticity. Commonly seen manifestations are a typical scissor gait, horseshoe foot deformity, and flexion of the knees in both lower extremities. The most common surgical treatment for cerebral palsy is selective posterior spinal nerve rhizotomy, which is the selective cutting of part of the posterior spinal nerve roots to bring the excessive spinal cord retractor reflexes to near normal, with a surgical efficacy of over 90%. Suitable for surgery: 1. Spastic cerebral palsy and mixed type of cerebral palsy with mainly spasticity, muscle tone grade 3 or above, and more severe spasticity. 2.The body’s random motor function is still good, without serious muscle weakness and tendon contracture, etc. 3.Stable spasticity status. 4. Normal or near normal intelligence to facilitate post-operative rehabilitation. The best age for surgery is 4-6 years old, but for children with stable and severe spasticity, it can be advanced to 3 weeks old. Surgical method: In the case of lower limb spasticity, the SPR of lumbosacral segment is selected, and the posterior roots of L2, L3, L5 and S1 spinal nerves are generally selected. Each nerve is divided into 4-8 bundles). The posterior roots are selectively excised according to the threshold value (for those with a low threshold) and the spasticity (for those with a high spasticity), and the final percentage of excision is determined by stimulating the posterior roots above and below the excision site and observing the corresponding muscle contractions or EMG responses. When the operation may involve nerves related to bladder sensation and anal sphincter function, it is also monitored by electromyography to protect these functions from being damaged. This greatly improves the safety of the procedure. Two days after surgery, rehabilitation exercise training was started under the guidance of the rehabilitation physician, with the amount and intensity of exercise starting from small and gradually increasing in an orderly manner according to the specific situation of the child. In the third week after surgery, the child can sit up and walk on the ground in the fourth week. Gradually and gradually towards success and hope.