Objects To study the influencing factors of the unintentional injury degree of hospitalized children,and provide the scientific evidence to the effective intervention measures. Methods A total of 70 children were selected as research subjects.Who were first hospitalized with unintentional injury in a changzhi hospital from August 1,2012 to July 31,2013 and responded face to face questionnaire.Chi-square test,Spearman rank correlation and multivariate logistic regression used to analyze the data. Results Proportion of children with severe injuries had statistically significant difference between father's cultures (χ²=4.230,P=0.040),the highest proportion of severe injuries in children whose father's education was junior or below (43.7%).The proportion of children with severe injuries had statistically significant difference between mother's age (χ²=8.406,P=0.015).Proportion of severe injuries was the highest in children whose mother aged above 40 years old,(60.0%).Non-only child's severe injuries (46.3%) was more than the only child (20.7%),the difference was statistically significant (χ²=4.868,P=0.027).There were significant positive correlations between unintentional injury degree,and injury outcomes,medical expenses,children age,father's age,mother's age (P<0.05).Mother with high age had 1.872 times risk of severe injuries than mother with lower age. Conclusions There are more risks of severe unintentional injury in father's lower culture,mother's higher age,non-only child's family.The heavier damage degree leads to the worse outcome and higher medical expenses;The older parents' and children's age have the heavier damage degree; Mother in high age group is risk factor of heavy unintentional injury.