In the past decade, national and international financial markets have experienced many financial crises. One reason for this crisis is the incorrect behavior of investors in making decisions, because of unclear situations and cognitive mistakes. with regard to there are these crisis in the domestic market , This study tries to explain the behavior of investors and identify sociological factors that influence on Conformity Behavior of Investors , It will help to solve financial crises in the securities market. In this research a questionnaire was used to collect data and research hypotheses were tested using Hotelling’s T-square test and multiple regression techniques. Results showed that investors satisfy their financial needs in line with its sociological needs and Knowledge and investment experience and age of investors are affect both forms of conformity behaviors and sociological needs are affect only on Normative Conformity Behavior and Investors gender did not affect any of the two forms of Conformity Behavior.