Cold rolling welding machine and cooling system of transformer of cold rolling welding machine

The invention discloses a cold rolling welding machine and a cooling system of a transformer of the cold rolling welding machine. The cooling system of the transformer of the cold rolling welding machine comprises a cooling device, a plurality of connecting pipelines and a plurality of speed regulating valves, wherein the cooling device is communicated with a plurality of cooling liquid interfaces of the transformer through the plurality of connecting pipelines; the plurality of connecting pipelines comprise at least two cooling liquid output pipelines and at least one cooling liquid recovery pipeline; the speed regulating valves are arranged in the cooling liquid output pipeline; the plurality of cooling liquid interfaces comprise at least two cooling liquid inlets and at least one cooling liquid outlet; and the cooling liquid output pipelines are respectively communicated with the cooling liquid inlets, and the cooling liquid recovery pipeline is communicated with the cooling liquid outlet. According to the