The invention relates to a processing method of a conductive copper bus. The method is characterized by comprising the following steps of first, smelting, wherein the first step specifically comprisesthe following steps of smelting and preheating, smelting preparation, temperature rise for the first time, temperature rise for the second time, and temperature rise for the third time; second, casting treatment, wherein molten copper is crystalized into a copper billet through a continuous casting machine, and the copper billet is pulled into a take-up stand by the continuous casting machine; third, finishing treatment, wherein the third step specifically comprises the following steps of peeling for the first time, stretching, and peeling for the second time; fourth, continuous extrusion treatment, wherein the fourth step specifically comprises the steps of extrusion and preheating, extrusion for the first time, and extrusion for the second time; fifth, stretching and cutting treatment,wherein the fifth step specifically comprises the steps of continuous stretching, and cutting and processing; sixth, surface treatment, wherein the sixth step specifically comprises the steps of acidpickling treatment, passivation treatment, air drying treatment, and drying treatment; and obtaining of a finished product. With the processing method of the conductive copper bus, the problems that according to casting in the prior art, because the internal structure of a finished product is uneven, the hardness of the finished product is poor, and because of continuous extrusion forming, the surface quality of the finished product is poor are solved.