The main object is to identify the position of rammed earth site using geophysical technology.Firstly,geophysical investigation was finished in known area where culture relics and their positions are known.And the known position information was obtained using drilling and exaction before.Secondly,the effective geophysical technologies were selected through comparison between geophysical exploration re-sults and drilling and exaction data in the known area.At last,the geophysical technologies were used in unknown area and the culture relic positions were inferred using geophysical image.The results show that horizontal positions of ancient construction base and road can be discerned from magnetic and ground electromagnetic method (GEM2) image.But the exploration precision of GEM2 is lower than that of magnetic method.The depth can be found using ground penetration radar (GPR) phase attribute.It is concluded that geophysical technology is effective for investigating rammed earth construction base and ancient road.The space position of culture relics can be identified by combination application of magnetic and GPR.