This research aims to determine the quantity of carbon dioxide emissions by collection activities data that effect to greenhouse gas emissions in aspect 1) fuel consumption 2) electricity consumption 3) food consumption of Science Center Thepsatri Rajabhat University officials. The study found that the carbon dioxide emissions by fuel energy consumption was 10,631.25 KgCo2eq, the carbon dioxide emissions by electricity consumption was 10,187.07 KgCo2eq and the carbon dioxide emissions by food consumption was 615.85 KgCo2eq. The total carbon dioxide emissions was 21,434.17 KgCo2eq of all three activities.