Abstract: A flexible transmission line assembly, which is connected between two relatively moving means that are movable relative to each other, comprises an abrasion-resistant flexible film and a plurality of transmission lines. The abrasion-resistant flexible film inner surface is surrounded to form a receiving space and is provided with an adhesive. The plurality of transmission lines is provided within the receiving space in a way each transmission line is adjacent to one another in a single row in width directions of the transmission lines, and the adjacent transmission lines being closely contacted with each other. The plurality of transmission lines is adhered with the inner surface of the abrasion-resistant flexible film by means of the adhesive, and the plurality of transmission lines at both ends in a longitudinal direction thereof is formed with a connecting element.