Diagnosis is made based on medical history, clinical manifestations, and ancillary examination features: 1. Medical history: history of high risk factors for cerebral palsy; history of delayed motor development and non-progressive exacerbation. 2. Clinical manifestations: abnormal muscle tone, abnormal posture, abnormal reflexes, often accompanied by mental retardation, visual and hearing impairment, language impairment, epilepsy and other complications. 3, auxiliary examination features: head imaging: need to clarify the presence of brain malformation, hydrocephalus, myelin sheath developmental delay, gray matter block displacement, etc. Periventricular white matter softening is a common manifestation. However, there are some children with cerebral palsy who have no significant abnormalities on CT and MRI of the head. The rate of EEG abnormalities is higher than that of normal children. orthopantomographs of the hip joint in children with cerebral palsy over 1 year of age often suggest abnormal hip development (subluxation, dislocation, etc.). The diagnosis of cerebral palsy is not difficult to make based on the following points: 1. High-risk factors for brain injury before birth to one month after birth. 2. Early symptoms of brain injury in the neonatal and infant period. 3, there are neurological abnormalities of brain injury, such as central motor deficits and abnormal postural reflexes. 4. Exclude central paresis due to other progressive diseases and transient motor development delay in normal children. Most of the clinical manifestations of children with cerebral palsy begin in infancy; however, not all children with cerebral palsy show obvious abnormal symptoms at an early age, especially in mildly affected children, and it is difficult to make a definitive diagnosis before 6 months of age, or even before 9 months of age. For typing diagnosis, the younger the age, the more difficult it is also, because the typical signs have not yet been fully expressed. Therefore, physicians and parents need to carefully observe and follow the infant, repeatedly and repeatedly, for a thorough evaluation in order to make an early diagnosis and early treatment.