The invention discloses a single-station electrode group casting welding machine. The single-station electrode group casting welding machine comprises a workbench, lifting columns, an auxiliary material groove, an electrode group clip, a conductive bridge die, a pump and a lead-melting furnace; the conductive bridge die is horizontally arranged on the workbench, guide arils for along the auxiliarymaterial groove to be displaced according to the process are arranged on the two sides of the workbench, the two lifting columns for supporting or being linked with the electrode group clip are further arranged on the workbench, the lead-melting furnace is attached to the front side of the workbench, the pump is arranged in the furnace, and a discharging pipe is assembled at an outlet of the pump. According to the single-station electrode group casting welding machine, the turnaround path between the processes is short, the consumed auxiliary working hour is less, and the production efficiency is at least 50% higher than that of the prior art; and the single-station electrode group casting welding machine is single station production, fixed-point and quantitative lead solution can be injected conveniently during casting welding, the fact that the surface of a conductive bridge casting has no flying edges is ensured, moreover, casting welding is conducted when an electrode group is ina positioning state, thus, the quality of a casted-welded joint is high, and the production cost is further remarkably reduced.