The invention relates to a flat cable for high voltage power transmission and distribution. The flat cable comprises a plurality of wires. The wires comprise conductors located in innermost layers of the wires and insulators covering the surfaces of the conductors. Every two adjacent insulators are in parallel fusion connection through their outer walls, a tearable fusion part is formed at the joint and provided with a tearing groove, and the surfaces of the insulators are provided with guide grooves representing the positions of the wires. According to the flat cable for high voltage power transmission and distribution, the wires are arranged to be a row for fusion connection, and every two adjacent wires can be torn along the fusion part to be used independently, so that the plurality of wires can be laid complexly in a narrow space. Since every two wires are in fusion connection, the flat cable does not need to be tightened through a binding strip, is convenient to tidy and is attractive in wiring.