Cerebral plasy (CP) is a brain-damaging disorder that occurs during fetal life and infancy due to a variety of causes. These non-progressive brain lesions constitute the main symptoms. The incidence of CP varies from country to country, but in China it is about 1.8-6.0 per 1,000, and accounts for about 32.5% of the physical disability in children. The symptoms of children with cerebral palsy are related to the location of the lesion. For orthopedic surgery, the main focus is on the movement and postural abnormalities caused by the skeletal muscle system. It is usually believed that the lesion is located in the pyramidal tract, but recent studies have confirmed that spasticity is due to an imbalance in the central brain and brainstem reticular formation, thus altering the balance between alpha and gamma motor neurons. 2, tardive dyskinesia and chorea symptoms, involuntary muscle contraction due to lesions in different parts of the central nervous system such as the cortical motor area and its downstream pathways, the basal ganglia, the midbrain, the central brainstem, the cerebellum and its pathways, the spinal cord, the peripheral nerves or the muscles themselves. It is often manifested as a constant change of posture of the child in a fixed position. 3. Ataxia, lesions in the cerebellum. Clinical manifestations are loss of position sense and balance function under open and closed eye conditions, inability to coordinate and synergistic disorders, poor rotation or inability to rotate movements, measurement disorders, hypotonia, often accompanied by intentional tremor, speech dysfunction nystagmus and low reflexes and other symptoms. 4, muscle tonicity and tremor, is the result of an equal increase in the tension of the initiating and antagonistic muscle groups, the limb of the child has significant resistance to movement in any direction and the full range of motion. This is due to a wide range of lesions. The children with cerebral palsy can be clinically classified into spastic, tardive, ataxic, rigid, and tremulous types according to the purpose of treatment and the type of limb movement disorder. The spastic type is the most common type, and the clinical treatment is mainly for this type of child. Cerebral palsy is a difficult disease to cure completely, and although the initial damage to the brain can be recovered to some extent, the residual lesions will remain for life. Therefore, the main goal of clinical treatment is to restore as much function as possible and reduce deficits in all aspects of intelligence, speech, gait and movement. The means include physical therapy, acupuncture, and surgical orthopedics. Surgical treatment can complement the non-surgical treatment and provide the possibility and conditions for non-surgical treatment, i.e., surgical correction of static or dynamic deformities, balancing of muscle strength, stabilization of uncontrollable joint functions, and overall improvement of the child’s functions in all aspects of gait and movement. Clinically, surgery is most effective in children with spastic cerebral palsy. Clinical treatment, the mastery of indications emphasizes the need for a comprehensive and systematic analysis of the deformity state and strict selection. Surgery is mostly indicated for children with spastic paralysis of the limbs, and postoperative care and rehabilitation can improve the surgical outcome. Common indications and surgical methods for tendon and bone surgery include: for children with postural spasticity of the lower extremities, such as ankle drop, knee and hip flexion spasticity deformity, Achilles tendon lengthening, bilateral adductor cut and anterior branch of the foramen magnum nerve cut can be done if non-surgical treatment is not satisfactory. In cases of bilateral knee flexion contractures, N-tendon (semitendinosus, semimembranosus and biceps femoris) supination, also known as Egger’s surgery, or N-tendon lengthening is used to correct the deformity. For those who have formed bony deformities, bony surgery is often required to correct them. For example, in older cases of clubfoot, Achilles tendon lengthening and triple-joint ankle fusion should be performed. In cases of hip dislocation, incision and pelvic osteotomy can be performed under the age of 6 years, while pelvic Chiari or pelvic triple osteotomy should be performed for those older than 8 years. Postoperatively, the treatment can be consolidated with brace therapy according to the deformity correction. For wrist and finger flexion and forearm rotation deformity with spastic palsy, the application of the beginning of rotation round muscle and flexor tendon release and tendon lengthening and tendon transplantation has certain effect, and wrist fusion can be done after 7 years of age if the deformity is serious. If the hand is functional but the elbow joint is not able to perform its maximum function due to flexion contracture and restricts the forward extension of the forearm, the elbow joint can be released in front and the radial and median nerves can be freed, which can improve its function. Shoulder deformities are mostly manifested as internal contraction and internal rotation, and even shoulder dislocation in older children. Surgical release of shoulder contracture is often done by humeral rotational osteotomy.