This study examines legal policy strategies to preserve tropical forest sustainability in the National Capital City (IKN) in the context of climate change. Indonesian tropical forests, particularly in East Kalimantan as the location of IKN, play a crucial role in global climate change mitigation and biodiversity conservation. However, challenges such as deforestation, forest degradation, and the impacts of climate change necessitate effective policy responses. The research utilizes a literature review method to analyze existing regulations and policies, as well as evaluate implementation and challenges faced. Findings highlight the need for strengthened law enforcement, increased transparency, and the integration of climate change issues into forest policies. Recommendations include cross-sector collaboration and enhanced community participation in forest management in IKN.