In recent years, Interferometric synthetic aperture radar (InSAR) method provides an effective tool for the study of all phenomena that cause changes in ground level, has been presented and used. Geophysical and geological applications, radar Interferometry has been growing and in recent years Has been introduced as a new and valuable method. The basis of this method is earth surface motions measure using radar Repetitious images. An image taken from a region at a given time (reference time) is combined with the image taken at another time by the same radar, and the resulting results are interpreted. With this technology can identify the changes and superficial displacement caused by phenomena under the surface (natural and artificial). The main objective of this research is investigate the ability of this method to be used for the indirect exploration of underground spaces, which is done by identifying subsidence and ground level altering in excavation and underground structures. Identification and observation of the effects of underground construction have diverse applications in both civilian and military domains