Cerebral palsy, also known as Little’s disease, is a syndrome of non-progressive brain damage caused by one or more causes from the beginning of embryonic development to the maturation of the brain before, during and after birth. The main manifestations are central motor dysfunction and postural abnormalities, often combined with intellectual deficits, behavioral abnormalities, mental disorders and visual, auditory and language disorders, and may be accompanied by seizures. 1. Mental retardation: About 2/3 of the children are mentally retarded, and about 1/4 of them are severely mentally retarded; spastic quadriplegia and ankylosing cerebral palsy are often more mentally retarded, and severe mental retardation is rare in children with tardive dyskinesia. 2. Visual impairment: About 25% to 50% of the children have visual impairment. Neonates have cortical dysplasia caused by different factors, resulting in “cortical blindness”. After early childhood, intraocular strabismus and refractive errors, such as myopia, amblyopia and strabismus, are most common. In some cases, there is nystagmus and occasionally total blindness. Children with hemiplegia may have ipsilateral hemianopia. Visual defects may affect the eye-hand coordination function. Hearing impairment: About 25% of children have hearing loss or even total deafness, and the most common type of children with hyperbilirubinemia is tardive dyskinesia. In addition to the developmental abnormalities of the congenital auditory nerve organs, hearing impairment caused by the unreasonable application of aminoglycoside antibiotics during infancy is not rare. 4. Sensory and cognitive abnormalities: Children with cerebral palsy often have tactile, positional, solid, and two-point discrimination sensory deficits. Children with cerebral palsy often lack correct visual-spatial and three-dimensional sensation, and their cognitive deficits are more prominent. Children with palsy have poor recognition of complex shapes and cannot distinguish the relationship between the shape of objects and the spatial context in which they are located, and have poor color recognition. 5. Language impairment: About 1/3 to 2/3 of the children have different degrees of language impairment. They have delayed language development, difficulty in pronunciation, unclear articulation, inability to speak in sentences, and inability to express their meaning correctly. Children with tardive dyskinesia and ataxia often have language impairment. Children with spastic quadriplegia and bilateral paresis also often have speech disorders. Seizures: Seizures occur in at least 10% to 40% of children at different ages, and are more common in spastic tetraplegia, hemiplegia, monoplegia and those with low intelligence. Infantile febrile convulsions and infantile spasms can lead to epilepsy in infants and children, and epilepsy caused by various types of craniocerebral injuries is common. Oral and dental dysfunction: About 25% of children with cerebral palsy have weak sucking, difficulty in swallowing and chewing, poor lip closure, frequent salivation, and some have dental caries or underdeveloped teeth, and these symptoms are most common in children with tardive dyskinesia. 8. Emotional and behavioral disorders: Most children with cerebral palsy have emotional or behavioral abnormalities, which are related to brain function damage. A lot of experimental and clinical data show that when the limbic system of the brain, especially the hippocampal gyrus, is damaged, it can cause emotional abnormalities in children. The children often show signs of crying, capriciousness, stubbornness, isolation, eccentricity, emotional fragility and agitation, and some of them have a sense of pleasure and emotional instability. In addition, most children with cerebral palsy show excessive activity, distraction, and disorganized behavior. Occasionally, children with cerebral palsy are seen to use their hands to hit their heads and jaws and other “compulsive” behaviors to hurt themselves. The most common upper limb deformities are: shoulder joint inversion and internal rotation, elbow flexion, forearm rotation, wrist flexion, thumb flexion or inversion and finger flexion, etc. The common lower limb deformities are: pelvic tilt, acetabular dysplasia, hip dislocation or subluxation, hip inversion, hip flexion and internal rotation, knee flexion, knee inversion, knee valgus, patellar dislocation or subluxation, foot ptosis, foot valgus, foot dislocation, etc. Foot ptosis, foot valgus, foot inversion, horseshoe foot deformity, claw toe deformity, scoliosis and abnormal vertebral body shape, etc. 10.Other: Most children are physically underdeveloped, malnourished and often prone to respiratory infectious diseases due to low immune function. Children with cerebral palsy often have learning and social difficulties due to single or multiple deficits in body movement, sensory, intelligence, language, emotion and behavior. Usually, the motor deficits of children with cerebral palsy interact with the above co-existing deficits. Intellectual impairment exacerbates language impairment, and various sensory and cognitive impairments, seizures, and learning difficulties exacerbate intellectual impairment.