Abstract: Objectives: To explore the correlation between family function and self-management behaviors among school-aged children with type I diabetes mellitus. Methods: Totally 215 school-aged children with type I diabetes mellitus were recruited from Jan 2013 to Jan 2014 in our hospital and investigated by. the Summary of Diabetes Self-care Activities and Family APGAR Index. Results: The self-management behaviors among school-aged children with type I diabetes mellitus were fairly good. The diet factor and drug compliance got highest scores, while blood sugar monitoring got lowest score. The overall family function of the children was relatively good. About 62.3% and 32.1% children had good and moderate family function, respectively, while 5.6% children had severe family dysfunction. There was a positive correlation between family function and self-management behaviors among school-aged children with type1 diabetes mellitus (r=0.168,P<0.05) . Conclusions: The family function of school-aged children with type I diabetes mellitus has close relationship with their self-management behaviors, therefore, we should improve the children'family function to enhance their selfmanagement behaviors.