Abstarct: Iran is located on one of the world earthquake belts and it consists of multiple faults. Among the factors that are reasons of powerful earthquakes around faults, released energy from them in continental blocks is one of these factors. So reconnaissance of faults, being young and being active faults are efficient factors that help not to create city around these faults. It is used from Ground penetrating radar (GPR) method which has high resolution in this research in order to study subsurface investigations and faults under sediments and also sediment surveys with aim of studying underground sediment laxyers. In this research, after first geology recognition of desired area that are some parts of Gilan province, and surveying of faults in the area, by GPR method, 45 profiles with different lengths and nonlinear strike are surveyed by Geological Survey and Mineral Explorations of Iran (GSI) team in proper location by using 100 and 250 MHZ of covered antenna and 50, 100 and 200 MHZ of uncovered antenna that consists of 119/586 Km from the desired area. Some of these profiles Process and interpret in this research. After reviewing and editing of first GPR data, processing and interpretation of these data is done by Reflexw software. The obtained results show that it can be used from GPR method for diagnosis and recognition of faults and determining of their Characterizations like dip and strike and also for distinguishing of sediments at shallow depth of subsurface.