The general objectives of the research are: 1) To investigates the economic hardships faced by fishermen households in the Spermonde Islands due to climate change., and 2) To examine the adoption of diversified livelihoods as a tactic for confronting and adjusting to climate change among fishermen in the Spermonde Islands. Meanwhile, the specific objectives of the research are: 1) Calculating the economic vulnerability of fishermen to climate change, 2) Determining the adaptive capacity index (ACI), 3) Determining possible scenarios taken by fishermen in making decisions related to the impact of climate change on fishermen's income and 4) Determine co-development scenarios for adaptation to climate change. The research method uses in-depth interviews with small-scale fishermen on four islands in Makassar City (Barrang Lompo Island and Kodingareng Lompo) and Pangkep Regency (Ballang Lompo and Badi Islands) and data analysis to understand the impact of climate change on fishermen's livelihoods and the factors that influence vulnerability. their economy. The research results show that fishermen in the Spermonde Islands face various challenges due to climate change, including increased frequency and intensity of extreme weather, changes in seasonal patterns, and rising sea levels. This impact negatively impacts their production and income, and threatens the sustainability of their livelihoods. A factor that most influenced the economic vulnerability of fishing households in the Spermonde Archipelago was the existence an alternative income for a fishermen.