Abstarct: Geophysical methods have high efficiency in the Prospecting and Exploration of mineral deposit. These methods if chosen properly, these will provide valuable information of mineralization in Surface or depth. A Magnetometric survey with 1060 sampling points of 10 meters distances was applied in this study with the aim of more accurate evaluation of poly mextal skarn deposit of copper, gold, zinc and iron. The survey was conducted in northeast of Nahavand near the village of Oshvand in a region with area of 350 × 400 square meters. After determining the extent of anomaly and also Mineralization along the trend, the best place for acquiring Resistivity and Induced Polarization data was obtained. Seven parallel profiles with 50 m spacing and Dipole- Dipole arrays and perpendicular trends to the mass were designed to investigate the dip and trend of the masses in depth and to determine the optimum points for drilling. In order to determine the source geometry and mass magnetization contrast to the surroundings, 3D inversion of magnetic data was applied using Li-Oldenburg algorithm (software UBC MAG3D). For optimum utilization of the algorithm, it's application on the synthetic data was firstly investigated and then used for modeling actual data. The surveyed Resistivity and IP data were entered to RES2DINV Software and inverted after primary corrections including removing outliers and results were presented as 2D sections. Finally, in order to reduce the risk of future studies and drilling costs, three-dimensional inversion modeling was used to analyze the data by RES3DINV Software . Regarding Reduction to the pole magnetic map with 5m upward continuation, it can be seen that masses are extended from east to west and most of them had depths up to 20 m. In almost all parts with magnetic anomaly changes, induced polarization anomaly changes were observed and the shapes of the masses were also well determined. It can only be said that weak magnetic anomaly sections are less likely to have iron content or the masses are in more depths. It was also observed that the dip direction of nearly all masses were to the south. The mass under study started from the Earth's surface and extended to depths of over 40 meters in some places. The separate masses with different slopes and depths that might be separated by fault were also well determined. baxsed on the obtained models from 3D inversion of magnetic data of the studied area, it seems that from 3 existing anomalies, the anomaly A is greater than the others from both size and magnetic intensity points of view. baxsed on all the information and results of the three-dimensional modeling of Magnetic, Resistivity and Induced Polarization data, Promising areas for exploratory boreholes were identified and introduced.