The invention discloses an induction current preventing wire-releasing pulley. The pulley comprises a pulley bracket with a tackle hook on the upper part, wherein a tackle main guiding wheel is arranged on the lower part of the pulley bracket; the pulley bracket is movably provided with a wire-pressing movable bracket above the tackle main guiding wheel; a wire-pressing pulley group matched with the tackle main guiding wheel is arranged on the wire-pressing movable bracket; the wire-pressing movable bracket transversely passes through the pulley bracket and the transverse two ends extend downwardly; the wire-pressing pulley group comprises a main wire-pressing pulley arranged above the tackle main guiding wheel and side wire-pressing pulleys arranged at the two transverse ends of the wire-pressing movable bracket; an elastic compressing apparatus which is used for elastically pressing the wire-pressing movable bracket downwardly is arranged between the wire-pressing movable bracket and the pulley bracket; the tackle main guiding wheel, the main wire-pressing pulley and the side wire-pressing pulleys are provided with electric brushes; and the bottom of the pulley bracket is connected with a main grounding wire. According to the induction current preventing wire-releasing pulley, three pulleys are in contact with a wire in any cases, so that more reliable contact is realized, the problems of wire jumping and the like can be effectively prevented, and a better induction current preventing effect can be achieved.