In an effort to eradicate corruption, countries including Indonesia have made efforts, one of which is by ratifying UNCAC through Law no. 7 of 2006. UNCAC is expected to complement the anti-corruption movement, which is still lacking from the regulation of the internal state regulations. This study aims to examine how UNCAC becomes a global instrument to prevent corruption and also to become a tool in overcoming specific corruption cases related to the environment. The method used in this study legal research normative. The results of the research show that the cases of corruption have a negative impact on the government and even the economy as well as on particular of environmental management of the state. The environment then becomes damaged and degraded by corrupt behavior that being driven by personal gain. Through this UNCAC instrument, it is hoped that law enforcement, both preventive and repressive in nature, will be able to overcome cases of environmental corruption that have harmed the state and society.