ObjectiveTo investigate the influential factors of delayed diagnosis in the patients with cerebral palsy.Method50 cases with cerebral palsy were divided into 2 groups: beyond-12-months-group(20 cases) and under-12-month-group(30 cases). Their social facters were investigated and analyzed. SPSS statistical software was used.ResultThere is significantly difference between diagnosing group of under 12 months and that of beyond 12 months(the group of delayed diagnosis) in the factors of parents' educational level, the region where patients came from(urban or rural) and the type of cerebral palsy(P<0.01), While there is no difference in high risk factors(P>0.05). ConclusionIt is necessary for reducing delayed diagnosis to raise national cultural level, to eliminate difference between town and country, to spread the knowledge of early diagnosis and evaluation in cerebral palsy, to improve diagnosing ability in local hospitals, and to establish high risk newborns' long-term monitor system.