This research aims to analyze the social assistance policy contribution to the Municipal Children and Adolescents Integral Attention Network of Niterói (Rede DCA) as from the actions taken by the Social Assistance Specialized Reference Center (CREAS) at the attendance flow of intra and extrafamilial violence cases, emphasizing the hindrances and possibilities of intersectorial work in the effective assurance of children and adolescents rights. It is a qualitative study, that was accomplished through semi structured interviews with eleven professionals in different levels of the Children and Adolescents Rights Assurance System of Niterói, submitted to content analysis as from its theme modality. The results show that the Rede DCA configures a relevant initiative, resulting from the political mobilization of actors and institutions from public authority and organized civil society, directed at the integral protection of children and adolescents in Niterói, even with the hindrances still found. The attendance flow of intra and extrafamilial domestic violence cases represents a collective achievement in favor of attendance to children and adolescents victims of domestic violence involved services and organs attributions delimitation and indicates the intersectorial acting capacity more and more tangible to the Rede DCA as from the development of interdisciplinary and interinstitutional actions already consolidated. However, the challenge identified in the understanding of CREAS assignments added to the difficulties of interlocution between the participants social actors in the attendance flow, makes this still not effective in operationalize intersectorial actions needed for integral protection of children and adolescents.