Abstract: The termite nest has always been an important risk to endanger the safety of embankments. With the current advanced nondestructive detection technology, the location and characteristics of hazards would be quickly and efficiently ascertained. The termite nests in such dykes and dams are detected by the integrative geophysical methods of ground penetrating radar(GPR) and high density resistivity(HDR). Based on the media speed of underground, the characteristics of the forward analysis and the observed image interpretation on the termites nests are obtained. Through certificating of excavation, three main termite nests, several deputies and some of the ant nests are detected, and the analysis results show that the detection accuracy is much higher. Finally, through data collection and technology refining, the integrative geophysical method, which is formed for detecting termite nests, is found to be convenient and time-saving. The analysis results also show that the integrated geophysical technology is a technically feasible and highly accurate diagnostic method. This technology provides a new technical support for the detection and prevention of dam termites. The on-site field testing shows that the integrated geophysical techniques to detect termite nests in dams can work in aging rate. It can basically determine the location and size of the underground nests, which is a new way to protect the dykes and dams.