The invention discloses a DF10D series locomotive non-auxiliary generating fault processing method. The method comprises the steps of 1, calculating history fault processing results, and ranking the fault types according to frequency from the high to the low; 2, according to the rank of the fault types, troubleshooting the faults in sequence. According to the DF10D series locomotive non-auxiliary generating fault processing method, in actual repair practice, a traditional method is abandoned that a circuit is comprehensively analyzed and detected point-by-point, the fault repair time is shortened, so that the locomotive is put into production rapidly, and company production loss caused by locomotive faults is lowered.