The invention discloses an aluminium stranded wire for an overhead transmission line of a power grid. An aluminum conductor coating layer is stranded at the outer surface of a second aluminum alloy conductive layer. The aluminum conductor coating layer is formed by twisting Z-shaped aluminum alloy conductors. A first carbon fiber wire and a second carbon wire are formed by stranding a plurality of carbon fiber precursors. A space among the carbon fiber precursors in the aluminum layer is filled with a polyester adhesive filling part which is formed by mixing a first component and a second component. The second component is formed by following components by weight, 100 parts of acrylic acid, 30 parts of methyl methacrylate, 25 parts of ethylene glycol, 15 parts of toluene diisocyanate, 1.5 parts of dibutyltin dilaurate, 1 part of benzoyl peroxide, and 0.5 part of phenyl-o-hydroxybenzoate. The structure of the aluminium stranded wire is compact, the bending radius is reduced to 6 times of a cable diameter, the space of installation layout is reduced, the installation cost is reduced, the laying is easy, a compressing coefficient is high, and the carrying capacity is increased under a same section.