The monetary and banking sector of the country, which has undergone numerous crises in recent decades, has experienced extensive changes with the adoption of the Central Bank of the Islamic Republic of Iran Act in 1402, through a new approach known as banking regulation. This article, using a analytical-descriptive approach, analyzes the preventive authorities of banking regulators in Iran and the United States from the perspective of the Central Bank Act and related laws in the American legal system.Identifying a wide range of regulatory actions as exploration, preventive and correctional actions are among the most important issues of the new central bank act that have been compared and analyzed along with the competence and actions of US banking regulators, and in particular informal enforcement actions.The findings indicate that increasing the regulatory capacity of the Central Bank of the Islamic Republic of Iran as one of the main goals of the new law has been significantly able to increase the authority and competence of the central bank to monitor and prevent violations, crimes and banking crises. Also, despite some deficiencies, the Iranian legislator has been able to bring the country's banking regulation closer to international standards by making widespread changes to Monetary and Banking Act and influenced by some international documents.