The invention provides an adjustable conveying roll table and an air cooling device for wires. The adjustable conveying roll table comprises a support, a conveying roll table, an expansion device and guide rails. The guide rails are fixedly arranged on the support, the conveying roll table is slidably arranged on the guide rails, the expansion device is fixedly arranged on the conveying roll table, and an expansion end of the expansion device is fixedly arranged on the support. The conveying roll table is slidably arranged on the guide rails and can move on the guide rails under the action of the expansion device, accordingly, the distance between two adjacent adjustable conveying roll tables can be adjusted conveniently, the requirement on cooling the wires can be met without installing or detaching conveying rolls on the conveying roll tables, and the labor intensity is reduced for operators by the aid of the adjustable conveying roll table.