In children with spastic cerebral palsy who reach the surgical guidelines, we give FSPR (functional selective posterior spinal nerve root partial resection) and in the second stage we give lower limb orthopedic surgery, which must be combined with postoperative rehabilitation. Only then can the patient’s mobility be improved to the maximum extent. This is because: weakening the patient’s abnormal movement pattern. We gave patients FSPR to reduce muscle tone and second-stage orthopedic surgery to correct deformities, but the abnormal movement patterns of patients for many years before did not disappear, and most patients’ joints were deformed again or even functionally deteriorated. Retrospective study: Most patients given surgery alone in the past, without paying attention to the importance of rehabilitation training, basically relapsed due to the presence of abnormal movement patterns. Therefore, we require postoperative rehabilitation training to weaken or fade out the existing abnormal movement patterns. Weight-bearing ability of both lower limbs. Without a certain amount of lower limb muscle strength, walking cannot be initiated, and the joints are prone to deformation and relaxation, or even deformation. Therefore, lower limb strength is the basis of walking. Children with cerebral palsy mostly have poor lower limb strength before surgery due to high muscle tone. Strength needs to be acquired through training. The balance ability of standing and walking dynamics. It needs to be strengthened by rehabilitation training. Cannot be obtained through surgery. Whole-body coordination. Requires interactive extension of limbs, trunk, head and neck coordination. Cannot be obtained through surgery.