The invention relates to a three-dimensional vibration electric generator which comprises a three mutually vertical generating units packaged in a sealed container and installed according to three space directions of an X, a Y and a Z; each generating unit comprises a hollow column-shaped winding cylinder (1), a plurality of windings (3) wound on the outer wall of the winding cylinder and arranged and wound along the direction of length of the winding cylinder, a sliding cylinder (2) penetrated in the winding cylinder and moved relatively to the winding cylinder, and a plurality of permanent magnets (4) arranged along the direction of length of the sliding cylinder and arranged in the sliding cylinder by a fixedly placed way; lubricant is added between the inner wall of the winding cylinder and the outer wall of the sliding cylinder; and all the windings in each generating unit are connected in series and overlapped after the full-wave rectification to become the output terminal of each generating unit, and the output terminals of the three generating units are connected in series and overlapped to be the total output terminal of the entire device.