Financial administrative corruption is one of the most common forms of corruption, which has devastating consequences in various personal and social spheres. Therefore, the purpose of this article is to examine the most important preventive policies against administrative corruption in Islamic jurisprudence, the Law on Promotion of Administrative Health and the Merida Convention. This article is comparative and descriptive. Materials and data are also qualitative and data collection was used to collect materials and data. The findings showed that requirements such as the formation of special procedures and institutions for the development of national preventive measures, private sector preventive measures, measures related to public prevention and other important sectors such as financial and judicial institutions and money laundering prevention measures are considered. All three have been placed, with the difference that in the Merida Convention, while having a participatory perspective, the laws have a suitable executive guarantee. As a result, both Iran's laws and the Merida Convention are silent on the act of changing the nature, origin, and source of the lawsuit resulting from the crime of corruption, which has caused preventive policies to be calculated in a coherent and appropriate manner.