Abstarct: The Ground penetrating radar method is a powerful high resolution electromagnetic technique that is used for investigation of substructure structures, such as faulting, sedimentary stratigraphy, detection of cavities, shallow investigation of fractures in decorative stone, detection of burial bodies in archeology, and so on. Investigation of stone using the GPR method is definitely not a new method because the first case studies are back to the 1970s. Vast research activities for investigation of stones have only begun in the last decade. The GPR method is a fast and suitable research method for the evaluation of natural stones, but the geological and geophysical features of stone should already be explored to help interpretion results. In this research, after preliminary geological studies of the travertine mine area in Cheshmeh Ali region, in the northwest of Damghan City, the study of joints and fractures in the stone blocks using GPR method, has been made by acquiring the GPR data along 5 survey lines having different lengths. Three survey lines have been considered above the stone wall and tow survey lines have been considered on the surface of stone without having wall. The GPR data acquision has been made using a shielded transmitter having central frequency of 300 MHz. After GPR data acquision, the data have been processed using Reflexw software. The results show that the GPR method can be used to detect the fractures and their properties, such as their direction and dip, shallow depths.