The invention discloses a magnetic confinement fluid electric-proof device, comprising an upper pipe joint 1, an upper insulating tube 2, an upper magnetic yoke 3, a magnetic yoke connector pipe 4, an axial magnet 5, an external housing 6, a lower magnetic yoke 7, an insulating tube 8, a radial magnet 9, a magnetic shielding case 10, a dustproof board 11, a lower pipe joint 12, a magnetic yoke lead hole 13, a magnetic iron end face 14, a lower magnetic iron end face 15, wires 16, an alarm 17 and a current limiting resistance 18, characterized in that the upper magnetic yoke and the lower magnetic yoke are connected by the magnetic yoke connector pipe; the axial magnet is arranged between the upper magnetic yoke and the lower magnetic yoke; two axial magnetic mirrors are formed on the magnetic iron end face and the lower magnetic iron end face. The radial magnets are arranged outside the insulating tube 8 in pairs; the magnetic shielding case is arranged at the external periphery of the radial magnets; the opposite surfaces of the radial magnets form two magnetic mirrors. When the fluid flows through the magnetic fields of the axial magnetic mirrors or the radial magnetic mirrors, the carrier is constrained by the magnetic field so that the fluid shows high impedance state and constrains the current flowing by the liquid to realize the goal of current limiting and electric proof.