Objective In terms of clinical features as a comprehensive observation and analysis of children with severe cerebral palsy(CP),to determine the efficacy of the results and better prevention. Methods A total of 240 severe CP children were examined by perinatal history,history of growth and development,symptom,signs,imaging studies,electroencephalogram,and Gross Motor Function Measure(GMFM),Peabody Developmental Motor Scale-Fine Scale (PDMS-FM),to detect the clinical features. Result Among the 240 cases of CP,103 cases (42.9%) with spastic type CP,81 cases (33.8%) with dyskinetic type,49 cases(20.4%) with mixed type,7 cases (2.9%) with hypotonia type ,gross motor function classification were than grade Ⅳ;the main risk factors for preterm delivery (37.9%),intrauterine hypoxia (20.4%),neonatal jaundice (15.8%);90% cases with mental retardation,44% cases with visual impairment,8.3% cases with hearing impairment,27.1% cases with symptomatic epilepsy,42.9% patients with swallowing dysfunction lead to malnutrition;brain morphological damage reduced to white matter volume,myelination delay,periventricular leukomalacia,multiple brain softening,cerebral dysplasia,basal ganglia lesions.Conclusion The pathogenic factors of severe cerebral palsy are complex and diversiform;severe CP patients' motor function is severely restricted;with even multiple concurrent disorders.To know these disease risk factors and complications of damage could help us to prevent and treat severe CP better.