The present study fundamental risk exposure from the great Iranian companies in terms of sales / income Tehran Stock Exchange have been accepted, and contextual factors exposure in connection with the corporate governance. Within the framework of the current companies, information about the risk of an important role in the decision-making process and evaluation of various organisations. The present study the relationship between the mechanisms of corporate governance in financial reporting. The study included 50demographic company adopted in Tehran Stock Exchange. Testing hypotheses benefiting from Eviews software. The results of the test the hypotheses shows that the ratio between foreign managers in the board of directors, board member, the number of board meetings and the size of the company's relationship with the level of risk exposing significantly while between the size of the board of directors, company size, efficiency, institutional shareholders, industry and financial leverage with the level of risk-free and compulsory disclosure is different from the results.