The purpose of this research is to reveal and discover hidden faults using the geomagnetic method in the Shahrbabak area of Kerman province, and the results finally led to the drainage of underground water resulting from the existence of faults. Using a proton magnetometer, magnetometric data was collected in 1300 points, and using Geosoft Osasis Montaj software, magnetometric maps of the area were prepared and with its interpretation, the fault lines of the area were determined, which are associated with the fault. The existing ones in the region were matched and the location of the faults made it easier to achieve the goal of this project.