FSPR for cerebral palsy, also known as “Phase I surgery for cerebral palsy”, is a highly selective cutting of la fibers under the monitoring of spinal nerve stimulator and electromyography, eliminating muscle afferent impulses and reducing muscle spasticity, which has become an effective method for relieving muscle spasticity and improving motor dysfunction in cerebral palsy. Its advantages are complete release of spasticity, good effect of reducing muscle tone, while preserving sensory function, which can significantly improve gait and significantly improve joint deformity caused by muscle spasticity. Although FSPR surgery is effective, it should be kept in mind that it is only suitable for the treatment of spastic cerebral palsy, and the relationship between FSPR and second-stage surgery should be corrected, as FSPR cannot completely replace second-stage surgery, and FSPR surgery must be performed first to relieve spasticity, and then second-stage muscle tone adjustment surgery. The FSPR technique overcomes the deficiency of selecting the posterior root of the spinal nerve at the anatomical level (naked eye), and adopts advanced positioning technology. It also avoids complications such as medically induced paralysis and urinary and fecal incontinence caused by the surgery. The best time for FSPR surgery for cerebral palsy is from 2.5 to 6 years old, after 6 years old the deformation of the limbs will be more serious and the postoperative rehabilitation time will be longer. Its effect is most direct and remarkable. After the FSPR surgery, children with spastic cerebral palsy should start a planned and purposeful rehabilitation. Based on the functional assessment of each child, specific rehabilitation goals and key rehabilitation programs (including rehabilitation equipment, physical therapy programs and important precautions) should be formulated for different ages and stages of the child. The first 5 weeks after FSPR surgery is an important stage of postoperative rehabilitation. At this time, according to the type of dysfunction and the potential ability of the child, the correct program that the child can complete with help should be selected, and the next step should be planned after the child has mastered it, or it can be crossed over and repeated to achieve proficiency. In addition, when conducting rehabilitation training, attention should be paid to the recovery of the child’s physical abilities, addressing the problems of the child’s weak resistance and poor tolerance of the organism as well as the blow to the organism from general anesthesia and surgery.