The sedimentary systems are explored on the basis of 2D seismic data for the target strata in one block in the Arakan Coast basin, Myanmar developed in the trench-slope basins along the active continental margin. The results of research in this study have disclosed that the sedimentary systems in the study area dominantly consist of the littoral-shallow sea, delta, turbidite fan, incised valley, bathyal continental slope and bathyal plain sedimentary systems. The reservoir rocks are mainly developed in the littoral-shallow sea, delta and turbidite fan sedimentary systems.