The invention discloses a petroleum perforating bullet device through electromagnetic driving. The device comprises a metal cover device, an input electrode, an insulation block and an output electrode, strong current is taken as the drive power to make the strong current flow through the surface of the metal cover and generate a toroidal magnetic field, the metal cover is crushed under the effectof Ampere force gathering in the axial direction to form high-speed high-pressure metal jet flow, and the metal jet flow can penetrate hard rock so that a deep hole can be formed. By controlling thecurrent magnitude, the taper angle, the generatrix length and the wall thickness of the metal cover, the length, quality and speed of the jet flow can be controlled to further control the depth and size of a perforating hole. According to the device, not only can the design method, with a new concept and a new principle, for a petroleum perforating bullet be enriched, but also a single mode that the perforating bullet is driven by explosive for using for decades is broken through, the device can be applied to petroleum exploration and exploiting, the petroleum exploitation rate is increased, and the perforating hole quality is improved.