Geothermal power plant is one of the alternative energy potentials and the utilization is by convert to electrical energy which produces emissions in the form of Hydrogen Sulphide (H2S). These emissions are transformed to sulphur dioxide (SO2) when released into the atmosphere which are identified through information and land cover. The purpose of this study was to determine the SO2 Concentration and Land Cover Change from a Geothermal Power Plant (PLTP) in Mataloko, Flores Indonesia. This study is descriptive using survey and qualitative methods. The number of samples used was 27 SO2 obtained from 3 power plant areas namely, MT 4, MT 3 and 5, and MT 1 and 2 wells. SO2 Test was carried out using the pararosanilin method with a spectrophotometer while land cover mapping was carried out using time series satellite images from Google earth. The result of this study showed that sulfur dioxide gas (SO2) from the Geothermal Power Plant in MT 4, had a very high SO2. This was because its location was very close to the Plant with 50m distance. The results of land cover seen on the map in 2017 were still the same with previous years (2011, 2013 and 2015), which were dominated by secondary forests and agricultural land. The overall area of vegetation around the Mataloko geothermal power plant did not experience significant changes due to these emissions.