For the Word Health Organisation, femicide is defined as the murder of girls or women simply because of being females.In France it is currently estimated that a woman dies each three days from violence of her partner or past-partner: it is so called “femicide”.Children witnessing the murder (femicide or domestic murder), in France to date did not benefit from a pedo-psychiatric care of any kind. Furthermore, justice, helath and child protection professionals were needy and unprepared.On the initiative of the observatory of violence against women of Seine Saint Denis, a multidisciplinary reflexion has led to a systematic care protocol, experimental and pilot in France, since March 2014.The aim of the protocol is to hospitalize under an X name, every child being present on crime scene either victim or witness of femicide or domestic murder in Seine-Saint Denis (Paris North Suburb). The hospitalisation is made possible by a three days interim care order (up to eight days) issued by a Public prosecutor in order entrusting Child Welfare Service and the pediatric service of Robert Ballanger hospital, with restrained visit rights. Child is taken in charge simultaneously by peo-psychiatrists and pediatricians. At the same time, the Child Welfare Service and the Public prosecutor are in charge of the modalities of support and exit of the child. To be witness of a femicide, in a context of domestic violences must be considered as the gravest trauma for a child which exposes him to a risk of major psychopathologic and developpemental complications adults especially as without adapted care the family and professional support dysfonctionne frequently. It is essential that this protocol is applied in a national way, it is at present widened, in in Seine-Saint Denis when the child victim is in a serious condition.