This study aims to find out and analyze the community structure, carbon stored biomass and the rate of sedimentation of mangrove forest ecosystems in Oebelo Village. This study is a quantitative descriptive research that uses a type of survey research, To obtain information about the condition of mangrove forests, an analysis method is used to find the Important Value Index (INP) which is represented by data on type density (Di), type relative density (RDi), type frequency (Fi), type relative frequency and important value index (INP) of mangroves in the research location. The results of this study show that (1) The results of the study show that the condition of the mangrove forest in Oebelo Village is classified as damaged, (2) The amount of carbon biomass stored in mangrove forest vegetation in Oebelo Village is 778.62 tons/ha, (3) The sedimentation rate of the mangrove forest area in Oebelo Village ranges from 0.298/g/cm2/day to 0.517/g/cm2/day.