The invention discloses a metal lead eccentricity fast detection device and method. The metal lead eccentricity fast detection device comprises a differential eddy-current detection coil, an AC bridge, and an excitation power supply. The metal lead eccentricity fast detection method adopts a one set/multi-set differential eddy-current detection coil eccentric symmetry detection method, and, on the basis of a bridge balance circuit, performs vector addition on multiple sets of signals after detection through output of unbalance signals of the bridge to determine an eccentric direction of the detected metal lead. The metal lead eccentricity fast detection device and method can effectively solve an eccentricity quality examination problem of the metal leads like a wire, a cable, etc.