This research is aimed to investigate the quality of family representation in patient with Eating Disorders Behavior and to verify if in reference to the representation of the family, there are important differences among anorexia, bulimia and obesity. To such purpose we have used the " Family Drawing Test". For the evaluation of the drawings we have adopted as grate of reading the one proposed by Castellazzi- Nannini, which it allows to analyze the drawings not only from a graphic and formal point of view but also in content. The preliminary results of this research have underlined that the three examined pathologies, also inside a common matrix, introduce among them important differences. These differences are observed both in the representation that such patients make of their family nucleus of affiliation and in the representation of themselves. Key words: anorexia, bulimia, obesità, representation of family