Fast food has become a prominent feature of the diet of university student in Egypt. Throughout the world ,adolescents, as a group, are at risk for nutritional problems both from physiological and psychosocial standpoint ,Adolescent obesity has become a major health concern in university students .An increased frequency of fast food restaurant dining is associated with higher intake of calories from fat .So the aim of this study was to estimate the rate of consumption of fast food among university students with changes in body mass index and diet quality through laboratory estimation of chemical and nutrient content(fat, fatty acids)of fast food, beside distributing a survey of university students in Alexandria university. The results indicated that saturated fatty acids were high in most vegetable, legumes and chicken meals compared to other meals as fast-food consumption has increased among university students. Recommendations contribute in achievement of a high quality of fast food and its safety for students' health.