Money laundering is considered a serious threat to the financial system of all countries and harms the sovereignty of governments; In Iran's economy, special attention has been paid to countering the phenomenon of money laundering for several years. In this research, the basics, concepts, history, steps and methods of money laundering have been investigated; Also, the international measures and conventions in the field of combating money laundering are explained, and in the following, Iran's legislative criminal policy against the crime of money laundering has been discussed, and finally, Iran's executive criminal policy against the crime of money laundering has been examined. The first direct action in Iran in the fight against money laundering was the approval of the anti-money laundering law approved in 2016, which has been directly criminalized by the legislator. Despite the fact that this law is a big step in the fight against money laundering, it had many shortcomings. Therefore, in 2017, the legislator approved the amendment of the Anti-Money Laundering Law, which is a great progress in the field of legislation in the field of anti-money laundering, and in a part of this research, these developments and legislative policies of the Iranian legislator in the field of anti-money laundering have been discussed. . In the continuation of this research, Iran's executive criminal policy against money laundering has been examined, and the actions of executive agencies, government institutions, organizations, and other authorities and businesses have been discussed.