Concrete radar, a new technology applied to structural nondestructive testing, is characterized by high resolution, singleside data collection, deep detection and easy dataprocessing. The technology is theoretically based on the Maxwell and Wave equation. With the development of the radar technology, concrete radar has gradually been separated from ground penetrating radar and become a special system for concrete structural testing. In combination with the CX serial nondestructive concrete radar, this paper deals with the theory and feasibility of this method.