The present invention discloses a CRDM coil testing system and a CRDM coil testing method. The CRDM coil testing system comprises: an operation software for providing a man-machine interface, sending a measurement command, collecting measurement signals and generating a report; an inputting and outputting unit for sending a measurement command according to a measurement switch signal, collecting parameter measurement results and outputting to the operation software; an integrated control unit for outputting a position identification command according to the measurement command and feeding back a trigger signal; and a parameter measurement unit connected to the clamping coil, the moving coil and the lifting coil on a CRDM and used for measuring the resistance data, the insulation data, the inductance data and the quality factor of each coil according to the position identification command and outputting the parameter measurement results to the inputting and outputting unit. With the system and the method of the present invention, the parameter measurement of the parameter measurement unit is controlled by the integrated control unit, such that the inputting and outputting unit collects the parameter measurement results so as to effectively improve the reliability and the consistency of the on-site data, avoid the data distortion caused by human error, and shorten the overhaul working hour and the manpower investment.