The invention discloses a device for preventing houses close to a high-voltage power transmission line from generating induced electricity. The device is characterized in that a conductive wire array formed by arranging a plurality of conductive wires which are all parallel to the high-voltage power transmission line at intervals is arranged at a spatial position between the high-voltage power transmission line and the houses, and the both ends of the conductive wire array are grounded; the various conductive wires forming the conductive wire array are arranged at places with different heights away from the ground, the section along a direction vertical to the ground, of the conductive wire array is arc-shaped, the arc centre is located between the conductive wire array and the high-voltage power transmission line; the conductive wire array forms semi-surrounding for the high-voltage power transmission line. The device disclosed by the invention is capable of integrally preventing the generation of induced electricity in the living areas of residents (comprising house wall bodies, indoor appliances, house surrounding activity areas).