Background and Objective: The purpose of this research is to identify the approach of Iran's criminal policy towards environmental crimes in the field of Iranian criminal policy.

Method: The present research is conducted with a descriptive-analytical method and information collection from specialized legal libraries and Islamic science software.

Findings: Environmental protection, which is known as one of the most basic human needs for survival, has become one of the problems and concerns of societies today, which has been irreparably damaged by the development of industry and technology. Therefore, environmental protection, especially in the field of studies of large-scale and transnational environmental crimes, has become a moral and social value that requires criminal and non-criminal support. In our country, the number of laws enacted to protect the environment is large, and these laws often include criminal protection of the environment, which in fact, criminal policy alone is not able to solve problems in this field, and criminal policy is effective when it also uses preventive measures in line with repressive measures. Therefore, in the field of criminal policy for environmental crimes, two strategies are proposed: criminal policy and prevention, where criminal policy means official response measures by the government and affiliated institutions, and prevention means taking preventive measures such as social prevention and situational prevention to combat environmental crimes. Conclusion: The result is that; using guarantees of execution is not the only solution to combat high-risk behaviors against environmental crimes, and using preventive methods combat environmental crimes.