The invention provides an interlocking type armored optical fiber composite low-voltage cable of a creep-resistant aluminum alloy conductor. The interlocking type armored optical fiber composite low-voltage cable comprises a conductor, an optical unit and an armor, wherein the conductor is the creep-resistant aluminum alloy conductor; and the armor is aluminum alloy strip interlocking type armor. The interlocking type armored optical fiber composite low-voltage cable has the advantages that: the conductivity can reach over 61 percent of International annealed copper standard (IACS); the conductor has excellent mechanical property; the rebound performance of the conductor is 40 percent lower than that of a copper cable; the flexible performance is 25 percent higher than that of the copper cable; and the weight of the conductor is half of that of the copper cable; when an alloy cable is used, the installation cost is directly reduced for a construction organization; an S-type interlocking type armor structure is used; the armored cable has high softness, and high strength; the minimum bending radius of the armored cable is 7D; the cable is reliable in connection, light in weight, small in bending radius, convenient for installation, good in radiation, bridge saving and resource saving; compared with common copper core low-voltage cable, the cable has obvious cost advantage, and saves large amount of copper; and the economical efficiency of the creep-resistant aluminum alloy interlocking type armored optical fiber composite low-voltage cable (OPLC) is adaptable to tendency of establishing the resource-saving society in China.