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Geological complexity part of South-West of Central Java area becomes an attraction for geologists and geophysicist to conduct details research in this area. An integrated approach of gravity and magnetic interpretation was performed to determine the subsurface geological structure patterns, distribution of sedimentary sub-basin, and basement configuration. Objective of this research is to analyze the depth of basement and describe the illustration of sedimentary rock. Interpretation of basement depth was processed from magnetic data whereas geological structure and sedimentary patterns was analyzed using gravity data. Magnetic Anomaly pattern shows that low intensity of magnetic < 60 nT (yellow – green) is disseminated at West-East of the map where as high intensty magnetic about > 200nT (red-purple) indicates basement rock or intrusive rock. Bouguer anomaly indicates that the area is dominated high anomaly 79.4 – 116 mgal (orange to purple) in west, north and southeast area, while low anomaly 49 – 79 mgal ( blue-yellow) in the middle to northwest of area. Interpretation of magnetic data have guided gravity method in reconstuction basin model especially in basement and intrusive rock. Foreward modelling of regional gravity map has pointed seven Formation with different desities, Tapak Formation; Upper Halang; Lower Halang; Pemali Formation; Gabon Formation; Karangsambung Formation and Basement rock