The Capacitance Coupled Resistivity (CCR) Method is characterized by no need of electrode grounding, rapid survey, and dense survey data, which are similar to things of the direct current tomography method. The method was applied to detecting subsurface hidden dangers in a city road of Hebei Province and in a railway channel of Hunan Province. In these two projects the method behaved satisfactorily, and the results show that the method is a good means in the field of detecting subsurface hidden dangers in roads or in railways.