Identity has a comprehensive meaning including: individual, collective, in-group, tribal and transnational identities. There is no doubt that all youth and children come across with a problem in their identities. Those who had more problems previously, live in this crisis. These individuals may be deceived by some extremist religious groups to know more about their potentials or weaknesses, social values and life goals, and social/ religious beliefs. Children try to get new experiences in order to review their origin, but when there is no deep relationship with their parents, so they disappoint. In this case they feel nonsense, dissocialism, wandering and sluggish. Identity crisis is not only one of injurious social factors, but also has negative circumstances such as: divorce, misdemeanance, etc.Our country has young generations, so we confront more identity crisis which leads disobedience and disclaim liability. It has negative effects on people activities, so our authorities should try more to study the effect of identity in society. In this research some key approaches have been given in addition to explain identity crisis, religious identity and identity crisis indexes.