The utility model discloses an optical-fiber composite overhead phase line, and the phase line comprises an aluminium steel-armoured wire 1, an optical-fiber unit 2, and an aluminium wire 3. The improvement lies in that the core of the overhead phase line comprises the aluminium steel-armoured wire 1; an intertwisted layer, which is formed by the intertwisting of the optical-fiber unit 2 and the aluminium steel-armoured wire 1, is disposed between the aluminium steel-armoured wire 1 of the core of the overhead phase line and the aluminium wire 3. The composite overhead phase line provided by the utility model is an optical-fiber composite overhead phase line which is large in cross section and has functions of optical communication and temperature measurement. The phase line can be used for the communication in various severe environments, including mine fields, heavily-polluted areas, high-altitude areas, high and cold areas, and heavy icing circuits.