The invention relates to the field of reservoir reinforcement, and specifically belongs to a seeping hidden trouble detection and directional processing method and detection equipment for an earth and rockfill dam. Aiming at a problem that most of earth and rockfill dams in current water conservancy engineering have a problem of seepage, the invention provides a directional processing method integrating seepage inspection and seepage blocking. The objectives of the invention lie in judging an electrical property abnormal area of a seeping channel according to the testing result of the resistivity of the earth and rockfill dam, interpreting the specific distribution of hidden troubles through combining the technical data of the operation of the reservoir, carrying out the reasonable guide of subsequent reinforcement operations, optimizing the grouting technology, avoiding the blindness of seeping blocking construction, remarkably improving the project benefit and winning social reputation. The method and equipment are advantageous in that the method and equipment introduce the latest parallel electrical method detection technology into the seepage detection of the earth and rockfill dam, carry out reasonable grouting according to a detection result, achieve the integration of hidden trouble inspection and processing, and achieve a purpose of quick directional processing.