Ramsar sites are designated wetlands of international importance under the Ramsar convention, an intergovernmental treaty established in 1971. These sites play a crucial role in conserving biodiversity and providing ecosystem services. The Ramsar convention encourages countries to designate and manage Ramsar sites sustainably, aiming to maintain the ecological character of these wetlands. Wetlands are areas that include marsh, fen, peat land or water and it is well known that these wetlands are important ecosystems that have a major positive impact on productivity, biodiversity and the well-being of residents. Though preserved, Ramsar sites face numerous threats, including habitat loss, pollution, invasive species and climate change, warranting management, conservation efforts and international cooperation to safe guarding these valuable wetland ecosystems for future generations. Pollution from agriculture, industry and urban runoff threatens water quality. Climate change exacerbates these issues, affecting wetland ecosystems and altering migration patterns. Due to the importance of Ramsar sites and to preserve for better livelihood, this paper explores the issues and challenges pertaining to the biodiversity of Ramsar sites in Tamil Nadu for better management through appropriate solutions.