Provided are an aluminium alloy composition, an aluminium alloy element, a communication product, and a method for preparing the aluminium alloy element. The aluminium alloy composition comprises a main aluminium body and doping elements, and the doping elements comprise 18-22% of Si, 0.2-0.95% of Cu, 0.25-2% of Fe, 0.05-0.2% of Mg and 0.04-0.08% of P based on the total weight of the aluminium alloy composition. Due to the coordination of the elements in the aluminium alloy composition, an aluminium alloy element prepared from the aluminium alloy composition not only has a good abrasion resistance, a low coefficient of thermal expansion and a high thermal conductivity, but also ensures a good fluidity during casting, thereby improving the processing castability thereof. In addition, appropriate amounts of Cu, Fe and Mg elements improve the mechanical properties of the aluminium alloy element, and 0.2-0.95% of Cu can effectively improve the thermal conductivity of the alloy; P-Cu is used as a modification element; the process is simple; and the cost is low.
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