Abstract. Zagros vegetation region is located in the west and southwest of the country of Iran. Nowadays, these forests are in severe quantitative and qualitative environmental dangers due to various climatic reasons, uncontrolled exploitation, overgrazing of livestock and lack of knowledge about management requirements and have become seriously affected. In the last 6 years, there have been numerous reports about the decline of oak trees in the central and southern Zagros forests. In this research was evaluated existing policies in decline crisis of Zagros forest of Iran with game theory. The research process has been conducted in several sections. In the first section of the research, key players of the decline crisis game in Zagros forests were examined, in order to evaluate strategies for crisis. In the second section of the research, the main strategies of the key players in decline crisis management were determined. Thereafter, the benefits of different strategies for key players were quantitatively evaluated with game theory. The result shows that it is clear from the diagram of the evaluation result of players in crisis game in Zagros forests that mode of results is in the executive management and local people of Zagros forests. Executive management has been having protection of forest resources and rainfall saving strategies. In reaction, local people has been having corporation and lack of corporation strategies. It can be extracted from the game theory model in this research that the game has 2 Nash Equilibriums (NE) in combination of protection of forest resources with lack of corporation of the people and combination of saving rainfall with corporation of the people. Based on the results there is no useful role for rainfall saving in Zagros forest of Iran. The way out of this impasse is to design appropriate policies in Zagros forests for the balance of rainfall saving and protection of forest resources, in a way that it follows the local community cooperation.