The present research addresses the legal and social framework in which the criminal type of familily violence is developed, the entire normative content and the evolution of the concept of domestic violence and femicide up to the present day are examined determining also the different variables involved in the course of the investigation in relation to the facts and the conviction or acquittal. It also examines the concept of domestic violence, the consequences it generates for the woman who suffers such events and the modalities it presents within the same concluding with the identification of the obstacles that prevent a better identification of the cases and figures that exclusively concern this behavior.