The invention provides an automatic wind source system of a rolling stock, and relates to the field of automobile manufacturing. The system comprises a main frame. A wind source device is fixedly installed at the bottom of the main frame, an air suction valve air inlet pipe is arranged inside the wind source device, a stainless steel ribbon is arranged inside the air suction valve air inlet pipe,and the air suction valve air inlet pipe is fixedly installed at the inner wall of the top of the air source device through the stainless steel ribbon. According to the automatic wind source system ofthe rolling stock, due to an electromagnetic valve, the phenomenon that in the working process, an air compressor is suddenly powered off and stopped and then powered on again, so that the air compressor breaks down can be avoided, the fault rate is greatly lowered, the maintenance cost is lowered, due to an air guiding pipe, by adopting the high and low temperature resistance material, the pipeline is short, the manufacturing cost is low, the pipe is not prone to aging, the phenomena of air leakage and electric leakage caused by high and low temperature can be avoided, air leakage is not likely to be caused, due to the air compressor, an adsorption drier, a dust removal filter, an air storage cylinder and various pipelines, the structure is compact, stress at the bottom of the main frameis uniform, the service life of the whole system is prolonged, and the occupied space is small.