Magnetic field observations were performed in Iron index of Ghahrood region located near Ghahroud village, from the environs of Kashan city in a range of dimensions (400m × 400m). Taking the samples from magnetite exposures(outcrops) and their deposits around them were used to understand the deep mineralization process and its continuity. In this area, 1100 points of total magnetic field (Total) were taken for magnetometric studies including interpretation and processing of magnetite outcrops. After the initial processing such as the removal of irrelevant data and field daily changes, the maps were drawn using magnetic simple data and then the processing maps were prepared. In the area of study, it was necessary to conduct magnetometric researches in the area due to the magnetite outcrop on the surface of the earth and its relation to existing fault systems, in order to investigate the depth of the iron zone and the extent of their expansion in different directions.