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Ruminant is the one of sectors livestock that contribute to increase global warming originates manure and animal eructation. Ruminant sector accounted for carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and ammonia that caused the acid rain. The objective of this research was to determine the contribution of livestock sector for greenhouse gas emission (GHG) on 2016 at Central Sulawesi. The research was used ALU Tool software to calculate the emission of GHG. Data source were from livestock population and emission factors (EF) of CH4 and N2O of any livestocks. The results showed that Central Sulawesi Provincecontribute to 574.020 (Gg CO2e) emission a year from ruminant. Big Rumintant or Beef cattle is the main contributor on GHG emission in form of enteric fermentation CH4 453.550 (Gg CO2e), as much as 76.42%. Small rumintant is the production of N2O from goats as much as 106.021 (Gg CO2e) or equivalent to 17.12 %