Some of the most essential political questions about people, institutions and political systems are related to psychology. Many of the researchers use this approach to consider the personality dimensions. They psychoanalyze political leaders in order to analyze the past, present and future conditions. From this point of view, through comparing Karen's psychological theory and Mohammadreza Pahlavi's behaviors, we believe that different environmental and social factors of his childhood, as a result of lack of support and love, led to neurosis and anxiety. So his personality led to a ruling full of narcissism, like of other's flattering behaviors and megalomania and so being after dominance over others. At last his personality weakness made him unable to use the existing national power and foreign support in order to save his imperial power.