The announcement of cancer diagnosis is always a traumatic state. For a long time, the physicians have been embarrassed to cope with emotional behaviours of their patients and received not enough help. In France, the "Plan Cancer" tries to organize the time of announcement. It constitutes an overhang which doesn't have to lead to imagine the existence of an "easy and simple solution". Psycho-oncology tries to support patients and medical staffs and must help everyone to understand expectations and limits in this field.