Objective: To explore the effects of father involvement on children's prosocial behavior and the mediating role of father-child attachment.Methods: The research surveyed 338 pupils from Grade three to Grade six and their fathers by the Inventory of Parent and Peer Attachment(IPPA),Inventory of Father Involvement(IFI),and the Strengths and Difficulties Questionnaire-self-report version(self-report SDQ).Results: Father Involvement had significant impact on children's prosocial behavior,and the father-child attachment significantly medi...