In this feeling, Gomes standes out: The reason of if including all the family in the treatment of adjustment problems is also based on the fact of that what she occurs in an individual that lives in a family does not elapse only of internal conditions it, but of an intense interchange with the context amplest in which he is inserted. It not only receives the impact from this environment as he acts on it, influencing it. (MINUCHIN apud GOMES, 2003, P.) the borders are the set of rules that determine which will be the participants of each subsystem of the family, are the borders that protect the distinction of the system and guarantee its particularitity, making possible the efficient functioning of the familiar system. ' ' The borders of a subsystem are the rules that define who participate of each subsystem and as it participates. So that the familiar functioning is adjusted, these borders must be ntidas' '. (MINUCHI apud SHEEP, 2005, P.
4). Still according to it the clear borders, they are responsible for the construction of clarified relations, where the people say ' ' sim' ' or ' ' no' ' objective and in accordance with the appeared demands. Already the diffuse borders are constituted by complex relations and confused papers, are not established of clear form the function of each member, also have an excess of concern and communication between them. In what she says respect the rigid borders, them they are composed for distant relations, and the people do not know themselves very well. TECHNIQUES OF SETTING OF BORDERS construto cognitivo is one technique that can be used to inside establish new borders of a system, or a subsystem. In accordance with Minuchin and Frishman (1990), the therapist can use metaphors, or same direct phrases, that point the necessity of if inside delineating a new border of the subsystem, of form, that makes possible its members to decide the conflicts only between itself.