The invention provides a high temperature resistant gold copper alloy cable, and relates to the field of cables; a cable core comprises, by weight, 0.16%-0.29% of Au, 0.22%-0.35% of Cr, 0.18%-0.26% of Co, 0.25%-0.32% of W, 0.12%-0.16% of Mo, 0.06%-0.11% of Zn, 0.13%-0.15% of Pt, 0.16%-0.21% of Rh and the balance Cu and inevitable impurities; in the preparation method of the gold copper alloy cable, raw materials are mixed and compressed so that alloy is preformed, and the binding force of the alloy can be strengthened; and at the same time, the preparation method is beneficial to reduce subsequent melting temperature and improve the melting speed, so the alloy components are distributed more evenly.