Today stock exchange, as a part of financial system of countries, is one of the significant indices for evaluation of economic growth and development. Hence, it is important to know the elements and functions of this market. Tehran Stock Exchange as the executive body of the market undertakes different functions in transactions of capital market. But, due to ignorance of effects and foundations of exchange transactions, it is lead to disagreement about interpretation and applying regulations related to functions of the company in exchange transactions. Since classical legal rules cannot ensure and support the interests of all groups involved in exchange transactions the evaluation of rules and regulations regarding the intervention in transactions must be analyzed based on such economic theories, including efficiency. Therefore, in this article, it is tried to survey the economic and legal efforts of the TSE intervention using analytical method